Which of the following is NOT a prerequisite for establishing causality with the simple experiment?

d. Is there an interaction between Audience and Therapist Personality? If so, describe the interaction. If not, describe how you know there is no interaction.

____ is the same as ____.

With a 2 × 2 factorial experiment, you can

Examine the data from the following experiments. Then answer the questions below: EXPERIMENT A       NO TREATMENT        MEDITATION             EXERCISE                4.00                                       6.00                              8.00                4.02                                       6.02                              8.02                4.00                                       6.00                              8.00                4.02                                       6.02                              8.02  [M1] [M2] [M3] a. Using the spaces above, calculate the group means for each treatment group.   EXPERIMENT B       NO TREATMENT        MEDITATION             EXERCISE                1.00                                       1.00                             10.00                8.02                                       9.02                               8.02                6.00                                       6.00                               6.00                1.02                                       8.02                               8.02  [M4][M5]  [M6] b. Using the spaces above, calculate the group means for each treatment group.

In an experiment on the effects of lighting on happiness, happiness would be the:

A statistical test is most likely to indicate significant results when the difference between the means is ____ and the within-groups variability for each both the control and experimental groups is ____.

Use analysis of variance rather than a t test whenever you are dealing with

If only chance is operating to influence your data, then the theoretically expected F ratio would be

In a graph of experimental results, the presence of an interaction is indicated by