The Only Reliable Way a Researcher Can Make Statistical Inferences

question 30

True/False

The only reliable way a researcher can make statistical inferences from a sample to a population is to use nonprobability sampling methods.

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Definitions:

Critical Value

A point on the scale of a test statistic beyond which the null hypothesis is rejected in favor of an alternative hypothesis.

Interaction Effect

A statistical phenomenon where the effect of one independent variable on a dependent variable depends on the level of another independent variable.

DfB

Degrees of Freedom Between groups, referring to the number of independent values in the calculation of variance between the different groups under study.

DfWG

Degrees of Freedom Within Groups, a statistical concept used in variance analysis to describe the number of independent pieces of information that went into the estimate of variability.