Design Excel visuals for risk results

Quick Overview

Design Excel visuals for risk results evaluates metric design, causal reasoning, experiment setup, diagnostics, SQL/statistical checks, and recommendations in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

Design Excel visuals for risk results

Company: Wells Fargo

Role: Data Scientist

Category: Analytics & Experimentation

Difficulty: medium

Interview Round: Technical Screen

Using Excel, design visuals to communicate portfolio EL, RWA, and concentration risks. Specify which PivotTables/charts/heatmaps you would create, the fields and measures used, and why these choices aid decision‑making.

Quick Answer: Design Excel visuals for risk results evaluates metric design, causal reasoning, experiment setup, diagnostics, SQL/statistical checks, and recommendations in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

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Jul 26, 2025
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Design Excel visuals for risk results

Excel Dashboard Design: Communicating EL, RWA, and Concentration Risk

Context

You are preparing an Excel dashboard for a credit portfolio review that must clearly communicate:

  • Expected Loss (EL)
  • Risk-Weighted Assets (RWA)
  • Concentration risks across obligors, sectors, regions, and ratings

Assume you have a loan-level dataset with at least these fields: Date, Obligor_ID, Obligor_Name, Sector, Region, Rating, PD, LGD, EAD, EL (or PD/LGD/EAD from which EL can be computed), RWA, Collateral_Type, and Portfolio/Book.

Task

Design a set of Excel visuals (PivotTables, charts, heatmaps) to communicate the portfolio's EL, RWA, and concentration risks. For each visual, specify:

  1. The PivotTable layout (Rows, Columns, Values, Filters) and any slicers.
  2. Measures/calculations used (with formulas if needed).
  3. The chart/formatting applied.
  4. Why this view aids decision-making.

Provide a concise, actionable plan suitable for a technical screen.

Clarifying Questions to Ask Guidance

  • Clarify the business objective, unit of analysis, time window, exposure definition, and primary metric.
  • State assumptions about instrumentation, randomization, sample size, and data quality.
  • Separate descriptive analysis from causal claims.

What a Strong Answer Covers Guidance

  • A metric framework with primary, guardrail, and diagnostic metrics.
  • A credible analysis or experiment design with clear assumptions and bias checks.
  • SQL/statistical logic for segmentation, variance, confidence, and data validation where relevant.
  • An actionable recommendation that explains trade-offs and next steps.

Follow-up Questions Guidance

  • What sanity checks would you run before trusting the result?
  • How would you handle novelty effects, seasonality, or selection bias?
  • What decision would you make if metrics disagree?
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