Why Is It Important to Divide by Df to Compute

question 54

Multiple Choice

Why is it important to divide by df to compute sample variance?

• A)doing so makes the sample variance an unbiased estimator of the population variance
• B)doing so ensures that the value for sample variance varies between 0 and 1
• C)doing so minimizes the likelihood that the sample variance will be a negative value
• D)it is not important;dividing by df is optional

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Definitions:

Collectively Exhaustive

A condition where a set of events covers all possible outcomes, ensuring that every possible scenario is accounted for.

Probability

The quantification of an event's chance of happening, represented as a number from 0 to 1.

Sample Space

The collection of every potential result or outcome from a probabilistic experiment.

Random Experiment

An experiment or process for which the outcome cannot be predicted with certainty beforehand.