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Questions
ERMCPS5350_006_2025_3 - INTRO TO QUANTITATIVE RISK MANAGEMENT 8. Quiz for Class 8
Single choice
If the population variance is unknown, then a degree of freedom is lost in the calculation of sample variance.
Options
A.True
B.False
View Explanation
Standard Answer
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Approach Analysis
To analyze the statement, we consider how sample variance is computed when the population variance is unknown.
Option 1: True. In practice, the unbiased estimate of the population variance uses the formula s^2 = [sum (xi - x̄)²] / (n - 1). Here, x̄ is the sample mean, which itself is estimated from the data and......Login to view full explanationLog in for full answers
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