Validity Is

question 22

Multiple Choice

Validity is:

• A) Consistent results over different samples taken from the population over time
• B) Whether or not the data represent true and accurate measures of the variables under study
• C) If the data measures something other that what it purports to measure
• D) The consistency in measurement over different points in time

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Definitions:

Degrees of Freedom

The number of independent values or quantities that can be assigned to a statistical distribution.

T Procedure

A statistical method used for hypothesis testing and constructing confidence intervals, especially useful when the sample size is small.

Equal Variances

A condition in which two or more groups have the same variance, often assumed in parametric tests comparing groups.

Pooled Two-sample T Procedure

A statistical method used to test if there is a difference between the means of two populations, assuming equal variances.