p. 397-400 #s 2, 5, & 7

Ch.) 15, Two-way analysis of Variance

Explain how you get each answer

• For credit, show all work...for example, if asked to calculate a mean of two data points, type out:
• xbar = (10+19)/2 = 14.5
• consider bolding/changing the answer by bolding it.

2. An interaction tells you that __________.

a. there is an overall effect of your independent variable

b. the effect of one independent variable depends on the level of the other independent variable

c. neither of your independent variables affects your dependent variable

d. none of the above

Answer:

5. In a factorial experiment, an interaction between the independent variables will always be present.

a. True

b. False

Answer:

7. If you find a significant interaction in your factorial design, then the main effects must also be significant.

a. True

b. False

Answer: