When a Researcher Needs to Compare Means for a Variable

question 59

True/False

When a researcher needs to compare means for a variable grouped into two categories based on some less-than interval variable,a(n)____________________ test is appropriate.

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Definitions:

Normally Distributed

Refers to a type of distribution where the data points are symmetrically distributed around the mean, with most observations clustering around the central peak and the probabilities for values further from the mean tapering off equally in both directions.

Mean

The mean of a collection of numbers, determined by dividing their total sum by the count of the numbers.

Standard Deviation

A gauge for the level of dispersion or spread within a set of data points, indicating the magnitude of deviation from the mean.

Standard Normal Distribution

A specific type of normal distribution with a mean of 0 and a standard deviation of 1, used in many areas of statistical analysis.