The Approximation to a Normal Distribution Can Be Assumed for Sample

question 48

Multiple Choice

The approximation to a normal distribution can be assumed for sample sizes of _____.

• A)15
• B)20
• C)25
• D)30 or more

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Definitions:

Central Tendency

A statistical measure that identifies a single value as representative of the middle of a dataset, commonly by using the mean, median, or mode.

Variance

A measure of the distribution of data points in a data set around the mean, indicating how spread out the data points are.

Z-score

A statistical measure representing the number of standard deviations a data point is from the mean of its data set, used in standardizing scores for comparison.

Probability Sampling

Sampling based on random selection of the sample units.