458 Chapter 13 Factorial Analysis of Variance
Conditioned Stimulus
Tone Vibration
High Med Low High Med Low
Control 11 16 21 19 24 29
Tone 25 28 34 21 26 31
Vibration 61320404152
Tone and Vibration 22 30 30 35 38 48Analyze the data and interpret the results.
13.24 In Chapter 2 we considered Sternberg’s experiment on the time it takes to report whether a test
stimulus was part of a prior stimulus display. The independent variables were the number of
stimuli in the display (1, 3, or 5) and whether the test stimulus had been included in the dis-
play (Yes or No). The data are found in RxTime.dat on the Web site (www.uvm.edu/
~dhowell/methods). This is a two-way analysis of variance. Run the analysis and interpret the
results, including mention and interpretation of effect sizes.
13.25 Use any statistical package to run the two-way analysis of variance on Interval and Dosage
for the data in Epineq.dat. Compare the results you obtain here with the results you obtained
in Chapter 11, Exercises 11.28–11.30.
13.26 In Exercise 11.30 you calculated the average of the nine cell variances. How does that
answer compare to the from Exercise 13.25?
13.27 Obtain the Tukey test for Dosage from the analysis of variance in Exercise 13.25. Interpret
the results.
13.28 The data for the three-way analysis of variance given in Table 13.14 are found on the Web.
They are named Tab13–14.dat. The first three entries in each record represent the coding for
A(Experience), B(Road), and C(Conditions). The fourth entry is the dependent variable.
Use any analysis of variance package to reproduce the summary table found in Table 13.14c.
13.29 Using the data from Exercise 13.28, reproduce the simple effects shown in Table 13.14.
13.30 A psychologist interested in esthetics wanted to compare composers from the classical
period to composers from the romantic period. He randomly selected four composers from
each period, played one work from each of them, and had 5 subjects rate each of them. Dif-
ferent subjects were used for each composer. The data are given below. (Note that this is a
nested design.) Run the appropriate analysis of variance.Classical Period Romantic Period
ComposerAB C D E F G H
12 10 15 21 10 9 8 12
14 9 18 17 11 12 7 14
15 10 16 16 9 7 11 9
11 12 18 18 8 15 12 7
16 13 17 17 13 8 8 8MSerror