Which design is a variation of GLM ANOVA and allows the analyst to control statistically for the impact of a nominal or ordinal control variable?
A)randomized block design
B)factorial design
C)within-subjects experimental design
D)demand artifact

Question

Quizplus · Accepted Answer

A randomized block design is a variation of GLM ANOVA that allows the analyst to control statistically for the impact of a nominal or ordinal control variable. The design involves partitioning the experimental units into blocks based on the control variable, and then randomly assigning treatments within each block. This controls for confounding effects of the control variable and improves the precision of the estimates of treatment effects. Factorial design and within-subjects experimental design are not specifically designed for controlling for control variables, and demand artifact refers to a phenomenon where participants guess the purpose of a study and alter their behavior accordingly, which is not related to experimental design.

Which Design Is a Variation of GLM ANOVA and Allows