A student has conducted an experiment involving a 4 * 2 design.The student's initial analyses of variance indicates there was no statistically significant interaction effect in the experiment.The independent variable with four levels,however,did produce a statistically significant main effect.Which of the following analyses should the student do next to specify the source of this main effect more precisely?
A) eta-squared analysis
B) simple main effects
C) simple interaction effects
D) comparisons of two means

Question

Quizplus · Accepted Answer

Since there was a statistically significant main effect for the independent variable with four levels but no significant interaction effect, the next step is to conduct comparisons of two means (e.g., post hoc tests or planned comparisons) to specify the source of the main effect more precisely. This helps in understanding which specific levels of the independent variable differ from each other.

A Student Has Conducted an Experiment Involving a 4