Apple Data Scientist Statistics & Math Interview Questions
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Apple
Medium
Data ScientistCompare Normal and Poisson Distributions in Statistics
Modeling Counts vs. Continuous Measurements Scenario You are modeling event counts (e.g., number of clicks) versus continuous measurements (e.g., resp...
Statistics & Math
19
0
Jul 12, 2025
Apple
Medium
Data ScientistCompare Normal vs Poisson; test dispersion and approximate tails
You collect n=200 independent minute-level event counts with sample mean x̄=14.5 and sample variance s²=16.2. 1) Under a Poisson(λ) model, derive the ...
Statistics & Math
0
0
Oct 13, 2025
Apple
Medium
Data ScientistDifferentiate P-value and Confidence Interval in Statistics
Statistics Knowledge Check (Onsite Data Scientist) Task Explain core inferential statistics concepts and when to apply common hypothesis tests. Questi...
Statistics & Math
0
0
Aug 4, 2025
Apple
Easy
Data ScientistWrite the logistic regression loss function
Logistic Regression Loss Consider binary logistic regression. - Dataset: \(\{(\mathbf{x}_i, y_i)\}_{i=1}^n\) - Labels: \(y_i \in \{0,1\}\) - Model: \(...
Statistics & Math
0
0
Jul 15, 2025