Morgan Stanley Interview Question: When calculating standard deviation, should we divide it by n or n-1? Why?

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Morgan Stanley Quantitative Analyst interview

Morgan Stanley Interview Question

Quantitative Analyst Interview

When calculating standard deviation, should we divide it by n or n-1? Why?

Interview Answers

Anonymous

Apr 29, 2018

unbiasedness

Anonymous

Nov 22, 2022

If you are calculating the s.d. of a population you use n, if you are calculating the s.d. of a sample of the population you use n-1 as you have one less degree of freedom.

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Morgan Stanley Interview Question

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