The Sample Variance _____ the Population Variance Across All Possible

question 105

Multiple Choice

The sample variance _____ the population variance across all possible samples of a given size.

• A)underestimates
• B)overestimates
• C)equals
• D)will either over- or underestimate (depending on the sample size.

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Definitions:

Normal Distribution

A bell-shaped curve that is symmetric about its mean, representing the distribution of a set of data where most observations cluster around the central peak.

Simple Random

A sampling method where each member of a population has an equal chance of being selected, ensuring unbiased representation.

Systematic Sampling

A statistical sampling method where elements are selected from an ordered population using a fixed periodic interval.

Stratified Sampling

A method of sampling that divides the population into distinct layers or strata and then randomly selects samples from each stratum.