Farmers Insurance Group · Data Scientist
Updated · 2026-09-24

Farmers Insurance Group Data Scientist
Interview Questions & Guide 2026

THE 60-SECOND BRIEF

As a Data Scientist at Farmers Insurance Group, you are positioned at the intersection of complex risk modeling and strategic business decision-making. You will play a vital role in transforming massive datasets into actionable insights that influence how one of the nation’s largest insurance providers manages risk, optimizes pricing, and enhances the customer experience. Your work directly impacts the financial stability of the organization and the security of the millions of policyholders who rely on the company.

Learn the economics of the product category before the loop. Marketplaces, subscription products and ad-supported products turn on different core quantities (match rate and liquidity, retention and churn, fill rate and yield) and fail in different characteristic ways.

Farmers Insurance Group candidates report 4 rounds · ≈ 3-5 weeks. The stages below are what candidates describe, not a published process.

Separate authorization, settlement and dispute outcomes cleanlySet fraud thresholds by expected costReport only matured cohorts for loss metrics

32 min read

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See the practice prompts

13Practice promptsAcross five skill areas
3With worked solutionsIncluded in the practice prompts

As a Data Scientist at Farmers Insurance Group, you are positioned at the intersection of complex risk modeling and strategic business decision-making. You will play a vital role in transforming massive datasets into actionable insights that influence how one of the nation’s largest insurance providers manages risk, optimizes pricing, and enhances the customer experience. Your work directly impacts the financial stability of the organization and the security of the millions of policyholders who rely on the company.

The environment at Farmers Insurance Group is characterized by a balance of legacy expertise and modern analytical innovation. You will collaborate with cross-functional teams—including actuaries, product managers, and software engineers—to solve high-stakes problems. Whether you are refining predictive models for claims, optimizing marketing spend, or improving customer retention strategies, your contributions will be central to maintaining the company's competitive edge in a data-driven insurance landscape.

Prepare to demonstrate how your technical work translates into business value; at Farmers, your ability to explain complex models to non-technical stakeholders is just as important as your coding ability.

01

Initial Screening

reported

A screening call is a matching exercise run by someone who will not evaluate your statistics. They are checking that the work described on your resume is work you personally did, and that its scope matches the level the role is written for. Logistics get settled in the same half hour so nobody spends an interviewer's afternoon on a mismatch. The answer that fails is the one narrated in the plural. If every sentence is 'we built' and 'the team decided', there is nothing specific to write down about you. Name the piece that was yours, the decision you made inside it, and what changed after.

What to demonstrate

  • Whether the ownership implied by your resume survives one round of follow-up about who actually did which part
  • Whether your described scope (data size, stakeholders, what shipped) matches the seniority the role is written at
  • Whether timeline, location and compensation expectations make the rest of the loop worth scheduling

How to prepare

  • Rewrite your top three resume bullets in the first person singular, each with the decision you made and what moved afterwards, then say them out loud once so the 'we' does not return under pressure
  • Attach one number to each project: the baseline, the change, and the window it was measured over. Where impact was never measured, say that plainly rather than inventing a figure
  • Settle your compensation range before the call and give it as a range with a reason behind it, such as current total comp or a competing timeline, instead of deflecting the question twice
PracHub interview research ↗
02

Video Interviews

reported

An extra round usually exists because something is still open after the standard loop: a skill the earlier interviews did not sample, a level decision, or two interviewers who disagreed. It is rarely a rerun of what you already did well. Ask the recruiter who you are meeting, what function they sit in, and how long the session runs. That is an ordinary scheduling question, and the answer changes what you should prepare. What separates a strong candidate here is treating the round as a fresh evaluation with its own bar, rather than assuming earlier performance carries you through or sinks you.

What to demonstrate

  • Whether you can answer well on ground the earlier rounds did not cover, without leaning on what you already said to someone else
  • Consistency of the facts in your stories: the same sample size, timeframe, team size and scope of your own role as in earlier conversations
  • How you handle an unfamiliar format live, including whether you ask what kind of answer is wanted before producing one

How to prepare

  • Ask the recruiter for the interviewer's function, the length, and whether to expect a coding surface, a discussion, or a presentation. Preparing for a 30 minute conversation with a partner team is not the same work as preparing for a 60 minute technical block.
  • Write out what each earlier round actually covered, then list the two or three areas nobody probed. That gap is the most likely subject of the extra round.
  • Re-read the numbers in the project stories you have already told, so a second telling does not quietly contradict the first.
PracHub interview research ↗
03

Technical Assessment

reported

Before anything else, this round is a reading test. You are given a small schema and a question phrased in business language, and most of the difficulty sits in the gap between them. Who counts as an active user, does a refunded order still count as an order, is that date column an event time or a load time. Weak answers start typing immediately and compute something precise about the wrong population. Strong ones pin the definition in one sentence, name the column that encodes it, then write the query. On a timed assessment with nobody to tell, write the definition in a comment anyway.

What to demonstrate

  • Whether an ambiguous term becomes a specific column and filter before any computation happens
  • Whether you read the schema for keys and cardinality rather than only for column names
  • Whether the result answers the question at the grain it was asked at, per user or per session or per day

How to prepare

  • Take three metrics you already use and write down the exact filter and exact grain behind each, then practise stating one of them in a single sentence out loud
  • On a schema you have never seen, spend the first minute writing what one row of each table means and which key it is unique on, then predict which joins can duplicate rows
  • Rehearse a version where the definition changes halfway through, and edit the query you have instead of starting over
PracHub interview research ↗
04

Behavioral Discussions

reported

This round decides whether you owned a decision or watched one happen nearby. Interviewers for data roles listen for the point where the analysis stopped being a report and started changing what someone did, so build each story around that hinge: what was going to happen by default, what you found, and what happened instead. The most common weakness is a story that ends at delivery. If you can name the decision your work changed and the number that moved because of it, most follow-ups become easy.

What to demonstrate

  • Whether the decision was yours to influence, or whether you are narrating a team outcome in the first person
  • The counterfactual: what would have been done without your analysis, and why that default was worse
  • How far your involvement ran past the handoff, and whether you checked that the change did what you predicted

How to prepare

  • Pick three projects and write one sentence for each naming the decision-maker, the choice in front of them, and what they chose after seeing your work. If you cannot name a person and a choice, the story is not ready for this round.
  • Reconstruct the baseline for your strongest project from the original query or dashboard rather than memory, so the before-number survives a follow-up asking where it came from.
  • Prepare an honest version of a project where your recommendation was overruled, including what you did with the analysis afterwards.
PracHub interview research ↗

PracHub editorial advice for the preparation topics above.

01

Using written premium as the denominator of a loss ratio

Premium is written at inception and earned pro rata across the exposure period, so in a growing book written premium runs ahead of earned premium and the loss ratio comes out too low, with the error reversing when the book shrinks. The numerator has the mirror-image problem if it omits incurred-but-not-reported reserves, since recent accident periods then look profitable twice over. Both sides must refer to the same exposure period, which is what an accident-period view at a fixed development age enforces.

02

Counting authorizations instead of weighting them, and summing amounts across currencies

Declines skew toward high-value, cross-border and card-not-present transactions, so an unweighted approval rate can sit flat while approved value falls. Merchant retry logic also turns one declined purchase into several rows, inflating the denominator by an amount that varies by merchant and by decline reason. Amounts are held in the minor unit of the transaction currency and that unit is not always two decimals, since some currencies have none and some have three, so summing amount_minor across currencies produces a figure with no interpretation at all.

03

Over-explaining the method and under-explaining the implication

Lead with the answer and what you would do about it, then give the approach when asked. Roughly one sentence of method per three of implication is the right ratio for a stakeholder-facing answer; the interviewer already knows what a regression is.

04

Reaching for a model before the target metric exists

Before naming an algorithm, write down the label, the prediction time, and the action that changes when the score crosses a threshold. If you cannot say what decision the output drives, any modelling choice is guesswork dressed up as method.

Choose a category, try a prompt, then open its approach, worked solution or follow-up when you need it.

10 technical prompts3 include a worked solution

Describe the bias-variance tradeoff in the context of predictive model…

medium
statistics and probability

Describe the bias-variance tradeoff in the context of predictive modeling.

Approach
  1. Sanity-check the answer against a simple bound or a simulated case.
  2. Write down the assumption the method needs before you use the method.
  3. Translate the result into the decision it informs, in one plain sentence.
Follow-up
  • What sample size would you need to detect an effect half this size?
  • How would you explain this result to someone who does not know statistics?

Can you explain the difference between supervised and unsupervised lea…

medium
statistics and probability

Can you explain the difference between supervised and unsupervised learning techniques?

Approach
  1. Say what the estimate is of, and over what population it generalises.
  2. Sanity-check the answer against a simple bound or a simulated case.
  3. Translate the result into the decision it informs, in one plain sentence.
Follow-up
  • How would you explain this result to someone who does not know statistics?
  • What sample size would you need to detect an effect half this size?

What is your process for data wrangling when dealing with missing or n…

medium
statistics and probability

What is your process for data wrangling when dealing with missing or noisy data?

Approach
  1. Say what the estimate is of, and over what population it generalises.
  2. Write down the assumption the method needs before you use the method.
  3. Sanity-check the answer against a simple bound or a simulated case.
Follow-up
  • Which assumption here is most likely to be violated in practice?
  • What sample size would you need to detect an effect half this size?

How do you handle multicollinearity in a linear regression model?

medium
machine learning and modelling

How do you handle multicollinearity in a linear regression model?

Approach
  1. Say how the offline result would be validated online before it is trusted.
  2. Pick an evaluation metric that matches the cost of each error type, not a default.
  3. Check what information would not exist at prediction time, and exclude it.
Follow-up
  • Where could label leakage enter this setup?
  • What would you monitor after launch to know the model is still valid?

Estimate a delinquency roll-rate matrix and project twelve months

hardWorked solution
roll ratesmarkov chainsurvivorship

fct_loan_performance_monthly gives loan_id, as_of_month_end, months_on_book, delinquency_bucket, charge_off_flag, prepaid_in_full_flag and restructured_flag. Build a month-to-month transition matrix over the five delinquency buckets plus absorbing charged_off and prepaid states. Loans that stop appearing must be routed to an absorbing state rather than dropped. Project the current book forward 12 months by repeated matrix multiplication and report the projected share reaching charge-off. Handle restructured_flag explicitly, and name one place the Markov assumption fails on this data.

Approach
  1. Build consecutive month pairs per loan by shifting as_of_month_end within loan_id, then verify the shifted value is exactly one month later. A gap is not a transition, it is an exit you have not resolved yet.
  2. Resolve exits before counting anything. A loan whose last row carries charge_off_flag moves to charged_off, one carrying prepaid_in_full_flag moves to prepaid, and one that disappears with neither is a data question to raise rather than silently discard, because discarding it is survivorship that inflates every cure rate.
  3. Count pairs into a 7 by 7 matrix and row-normalise. Assert every row sums to one and the two absorbing rows are the identity; a row that does not sum to one means exits were dropped.
  4. Decide and state the restructure rule. Restructuring resets days_past_due, so a dpd_60_89 to current move on a restructured loan is not a cure. Either give restructured loans their own state or carry the pre-restructure bucket, but do not let that move land in the cure cell.
  5. Project by taking the current bucket distribution as a row vector and multiplying by the matrix twelve times. Report the charged_off entry, and report it again from an all-current starting vector so the reader can see how much of the projection comes from loans that are already delinquent today.
  6. State the homogeneity failure plainly: transition rates depend strongly on months_on_book, so one pooled matrix applied to a book with a young mix understates early-life delinquency. If the mix is moving, estimate separate matrices by seasoning band.
Worked solution 45 min
  1. Sort by loan_id and as_of_month_end, shift to form (from_state, to_state) pairs, and flag pairs whose month gap is not exactly one.
  2. For each loan's final row, assign the absorbing destination from charge_off_flag or prepaid_in_full_flag, and list loans that vanish with neither as an exception count to report.
  3. Apply the restructure rule, then build the 7 by 7 count matrix with a cross-tabulation over ordered state categories and row-normalise it.
  4. Assert row sums equal one and absorbing rows are the identity, then take the current month's bucket distribution as a row vector.
  5. Multiply twelve times, report the charged_off component, and repeat from an all-current vector for comparison.
EXPECTED RESULTA 7 by 7 row-stochastic matrix with identity rows for charged_off and prepaid, a current-to-current diagonal typically above 0.95, roll rates rising with bucket depth, and a 12-month projected charge-off share of a few percentage points from an all-current start and materially higher from the actual book.
Follow-up
  • How would you validate the projection against what actually happened, and over what window?
  • The cure rate out of dpd_30_59 rose five points last quarter. What are the candidate explanations and how would you separate them?
  • When would you prefer a vintage curve to a roll-rate projection, and why?

Instead of guessing where the week should go, day one measures it under a fixed rubric and allocates the remaining hours in proportion to the gaps. The method is deliberately rigid: the allocation is written down before any studying starts and is not renegotiated when a topic turns out to be unpleasant.

Small steps. Visible outcomes.0 / 7 completed
ONE WEEK · YOUR PACE

Prepare, practise & reflect

One practical outcome each day. Spend longer where you need it.

0 / 7 done
01Diagnostic, scored before you study anything
  • Sit a 100-minute timed diagnostic in four blocks: 30 minutes of SQL across three prompts, 25 minutes of short-answer statistics, 25 minutes on one modelling or case prompt, and 20 minutes delivering one behavioural story aloud.
  • Score each block from 0 to 3 on a fixed rubric where 3 is correct and fluent, 2 is correct but slow or prompted, 1 is partially correct, and 0 is stuck, grading the output rather than how the attempt felt.
  • Allocate the hours for days two to five roughly in proportion to 3 minus the score in each block, write the allocation down, and commit to not revising it midweek.

Deliverable: A scored rubric and a fixed hour allocation for the rest of the week.

Practice prompt ↗Practice prompt ↗Worked solution ↗
02Largest gap: find the boundary rather than the subject
  • Break the weakest area into five named sub-skills (for query work: grain control, window frames, date arithmetic, set logic with NULLs, and reading a query plan) and rate each one, so the rest of the week targets a sub-skill instead of a subject.
  • Solve three problems chosen to sit just above where the rating drops off, and for each write the first move you failed to make.
  • Re-solve one of them from memory four hours later, on paper, with nothing open.

Deliverable: A five-item sub-skill map with the two blocking sub-skills circled.

Practice prompt ↗Practice prompt ↗
03Largest gap: drill the blocking sub-skill
  • Do eight short repetitions of the same shape rather than eight different problems, so what you practise is the pattern and not the puzzle.
  • Write the rule you now hold in one sentence, then test it against a case built to break it: a ranking function over a column with ties, or a two-sample test on observations that are obviously dependent.
  • Have someone else read your one-sentence rule and find the precondition you left out.

Deliverable: One rule statement with its preconditions attached and one counterexample that would have caught the incomplete version.

Practice prompt ↗Practice prompt ↗
04Second gap, plus maintenance on your strongest area
  • Run the same sub-skill map and boundary protocol on the second-largest gap, compressed into half the day.
  • Spend 25 timed minutes on your strongest area to stop it decaying, choosing the hardest problem you can still finish rather than an easy warm-up.
  • Compare how the two areas fail: whether you lose time on recall, on setup, or on arithmetic, because the fix differs for each.

Deliverable: A second sub-skill map plus a one-line diagnosis of how each area fails you.

Practice prompt ↗Practice prompt ↗Worked solution ↗
05The gap that is not a skill
  • Record yourself answering one technical and one behavioural prompt, then count two things in the playback: how many seconds before your first clarifying question, and how many sentences you started without knowing where they ended.
  • Rewrite your three most-used stock phrases into shorter versions, and practise saying "I do not know, here is how I would find out" without softening it into a guess.
  • Deliver one answer again with a hard 90-second limit to force structure before detail.

Deliverable: Two recordings with a counted improvement in time-to-first-question.

Practice prompt ↗Practice prompt ↗
06Retest under day-one conditions
  • Sit the same 100-minute diagnostic structure with new prompts of comparable difficulty and score it on the identical rubric.
  • Compare block by block, and for any block that did not move, change the method rather than adding hours: a block stuck at 1 usually means the practice was too varied, not too short.
  • Write which single block you would still lose the offer on.

Deliverable: A second scored rubric placed next to the first, with one named remaining risk.

Practice prompt ↗Practice prompt ↗
07Full loop under interview conditions
  • Run a 60-minute mock covering the two blocks that moved least, with an interviewer instructed to interrupt and change direction.
  • Write your recovery script for the moment you go blank: restate the question, state your assumption, name the first thing you would check.
  • Reduce the week to the rule statements you wrote, each with its preconditions attached, then say every one of them out loud without reading it and cut any you cannot state in a single sentence, since a rule you have to reconstruct mid-answer will not survive being interrupted.

Deliverable: A one-page card holding the recovery script and only the rules you could state from memory.

Practice prompt ↗Worked solution ↗

Expand any day for tasks and deliverables. Your progress is saved on this device.

Work that nobody used is a common and unflattering pattern in data careers, and interviewers probe for it. Have a story about an analysis that changed a decision, and be specific about how you got it in front of the person who could act. Also have one about work that went nowhere, with your reading of why.

Describe a situation where you faced a significant roadblock in a proj…

medium
behavioural and stakeholder questions

Describe a situation where you faced a significant roadblock in a project; how did you overcome it?

Approach
  1. Name the disagreement or constraint, and how you resolved it with evidence.
  2. State the situation in two sentences and spend the rest on your reasoning.
  3. Pick a story where you drove the decision, not one where you observed it.
Follow-up
  • How did you know the outcome was caused by your change?
  • What would you do differently if you ran that project again?

What motivates you to work in the insurance industry specifically?

medium
behavioural and stakeholder questions

What motivates you to work in the insurance industry specifically?

Approach
  1. Close with what you would do differently, concretely.
  2. Name the disagreement or constraint, and how you resolved it with evidence.
  3. Quantify the outcome, including what you would not claim credit for.
Follow-up
  • What would you do differently if you ran that project again?
  • What did you decide not to do, and why?

Allocate one analyst-week across three competing risk requests

medium
prioritisationdecision deadlinesstakeholder negotiation

Three requests land in the same week and you have one analyst-week. Payments wants a merchant-level decline teardown before a contract renewal in nine days. Credit wants a swap-set analysis on a cutoff change scheduled to ship in six weeks. Insurance wants accident-quarter loss ratios at 12 months development for a reserving review with no fixed date. Each sponsor believes theirs is first, and each has escalated before. Produce the allocation, the reasoning you would say out loud to all three at once, and what you explicitly drop.

Approach
  1. Score each request on the decision it unblocks rather than on effort or on how loudly it arrived: what changes if it is late, and is that change reversible.
  2. Separate deadline from value. The nine-day renewal is a hard, irreversible date with a bounded prize; the six-week cutoff has slack but a much larger downside if it ships unmeasured; the reserving number has no date but feeds external reporting, which is its own kind of hard.
  3. Hunt for the cheap partial in each: a decline teardown restricted to the top merchants by declined value usually answers the contract question at a fraction of the full cut.
  4. Sequence by hard date first, then by largest irreversible downside, and deliver the trade-off to all three sponsors in one message rather than three, so nobody negotiates privately against a version you told someone else.
  5. Name what is dropped and who now owns that consequence, in writing, so the trade-off is visible rather than silently absorbed by you.
Follow-up
  • The credit sponsor escalates to your manager. What do you change, and what do you refuse to change?
  • How would you make this allocation reproducible so the next contested week is a rule application rather than a negotiation?
  • 01

    Describe a situation where you faced a significant roadblock in a project; how did you overcome it?

  • 02

    What motivates you to work in the insurance industry specifically?

  • 03

    Three requests land in the same week and you have one analyst-week. Payments wants a merchant-level decline teardown before a contract renewal in nine days. Credit wants a swap-set analysis on a cutoff change scheduled to ship in six weeks. Insurance wants accident-quarter loss ratios at 12 months development for a reserving review with no fixed date. Each sponsor believes theirs is first, and each has escalated before. Produce the allocation, the reasoning you would say out loud to all three at once, and what you explicitly drop.

PracHub interview preparation framework ↗
Is this an official Farmers Insurance Group interview guide?

No. It is PracHub's own research and practice material for the Data Scientist role at Farmers Insurance Group. Rounds and questions reflect what candidates have reported, not a process Farmers Insurance Group has published, and they change over time. Confirm the current format and scope with your recruiter.

PracHub interview research ↗
How long does the entire interview process usually take?

The process typically spans a few weeks, depending on team availability. It involves a mix of remote calls, which may include case studies or technical deep dives.

PracHub interview research ↗
Should I expect a take-home assignment?

Some interview processes include a take-home case study, while others focus on technical discussions during the video calls. Be prepared to discuss past projects in detail, as this is a common substitute for a formal assignment.

PracHub interview research ↗
What is the company culture like for the data team?

The culture is generally described as professional and collaborative. You will be working in an environment that values methodical problem-solving and clear communication.

PracHub interview research ↗
Sources & methodology 3 sources ↗

No official company page is cited. Rounds and questions come from candidate reports and PracHub editorial material; each source shows the date it was read.