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Statistics and probability
Backend Developer
Statistics and probability questions
14 questions on Statistics and probability for backend developers, easiest first.
Easy
4
Random whole number in a range
easy
Median of four values
easy
Average roll of a die
easy
Typical salary with one outlier
easy
Medium
4
Average order value across stores
medium
Two people with the same birthday
medium
Chance two dice sum to 7
medium
Finding p95 from 20 timings
medium
Hard
6
How soon 32-bit hashes collide
hard
Bias from random byte % 100
hard
Picking one random log line from a stream
hard
Weighted random server choice
hard
Making a Monte Carlo result 10× more precise
hard
Upper bound of the fifth retry delay
hard
