Sorting a Collection of Cases into Two or More Groups

question 13

Multiple Choice

Sorting a collection of cases into two or more groups is referred to as _____,whereas _____ refers to selecting a smaller subset of cases from a larger pool of cases.

• A)random sampling;random assignment
• B)random assignment;random selection
• C)purposive sampling;selective sampling
• D)random assignment;random sampling
• E)random assignment;purpose sampling

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Definitions:

Interaction Effect

Occurs when the effect of one independent variable on a dependent variable varies according to the level of another independent variable.

Two-way ANOVA

A statistical test used to determine the effect of two nominal predictor variables on a continuous outcome variable, considering interactions between the predictors.

Main Effect

The direct impact of an independent variable on a dependent variable in an experimental design.

Model Sum

A statistical term used to describe the total sum of squares in a model, measuring the variation explained by the model.