easy · FRM Part 1 Quantitative Analysis
If a sample has a very small number of observations (n = 5), why is the distinction between n and n - 1 in the variance formula particularly important?
- The sample variance becomes infinite if n is less than 10.
- The kurtosis can only be calculated if n is greater than 30.
- The percentage difference between the two divisors is large (20%), causing significant bias.
- Skewness is always zero for samples smaller than 10.
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