A Student Has Conducted an Experiment Involving a 4

Multiple Choice

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