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Top 50 statistics Interview Questions

The most frequently asked statistics questions across all roles and companies, ranked by real interview frequency. Updated daily.

50questions
~14htotal time
259companies covered
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1
CodingStart here. 17 questions · ~284 min
Stats and Algorithms TaskMedium
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Recently asked

Return a consistent five-part plan for analyzing a statistics and algorithms problem.

aggregationCodingstatisticsHHudson River Trading
Probability Coin QuestionMedium
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Use dynamic programming to calculate the probability of getting at least k heads from independent coin flips.

combinatoricsDynamic ProgrammingprobabilityHHudson River Trading
Mean Median Mode From ArrayListEasy
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Calculate the mean, median, and smallest mode of a non-empty integer array.

aggregationArraysstatisticsLtimindtree
Rolling Averages and OutliersHard
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Use a deque and running statistics to calculate rolling telemetry averages and detect outliers in linear time.

Data AnalysisstatisticsAmazon
Mean and Variance FunctionEasy
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Compute the population mean and variance of a numeric dataset using a linear scan.

aggregationfunction implementationArraysPwC India
API Stats: Min, Max, Average, ModeMedium
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Recently asked

Compute minimum, maximum, average, and mode response times using one pass and frequency counting.

aggregationArraysapiNew Relic
Mean, Median, Mode FunctionsEasy
Practice

Compute the mean, median, and smallest mode of a non-empty integer array.

aggregationArraysfunctionsSSAP Concur
Find Mode With Tie-BreakMedium
Practice

Find the most frequent list value, returning the smallest value when multiple values share the highest frequency.

ArraysstatisticsArray ManipulationFFlexTrade Systems Inc.
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2
SQL & Data Manipulation3 questions · ~50 min
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3
Statistics & Probability28 questions · ~468 min
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4
More topics2 questions · ~33 min
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