Statistics for the Behavioral Sciences by Frederick J. Gravetter, Larry B. Wallnau ISBN 10: 1305504917 ISBN 13: 9781305504912

SPSS ® 405
Data Analysis
1. Click Analyze on the tool bar, select Compare Means, and click on One-Way ANOVA.
2. Highlight the column label for the set of scores (VAR0001) in the left box and click the
arrow to move it into the Dependent List box.
3. Highlight the label for the column containing the treatment numbers (VAR0002) in the
left box and click the arrow to move it into the Factor box.
4. If you want descriptive statistics for each treatment, click on the Options box, select
Descriptives, and click Continue.
5. Click OK.
SPSS Output
We used the SPSS program to analyze the data from the study comparing studying strategies
in Example 12.2 and the program output is shown in Figure 12.12. The output begins with a
table showing descriptive statistics (number of scores, mean, standard deviation, standard error
for the mean, a 95% confidence interval for the mean, maximum, and minimum scores) for
each sample. The second part of the output presents a summary table showing the results from
the ANOVA.
Descriptives
VAR00001
95% Confidence Interval
for Mean
N Mean Std. Deviation Std. Error Lower Bound Upper Bound Minimum Maximum
1.00
6
5.0000
2.19089
.89443
2.7008
7.2992
2.00
8.00
2.00
6
9.0000
2.60768
1.06458
6.2634
11.7366
5.00
13.00
3.00
6
10.0000
2.44949
1.00000
7.4294
12.5706
6.00
12.00
Total
18
8.0000
3.18082
.74973
6.4182
9.5818
2.00
13.00
VAR00001
ANOVA
Sum of
Squares df Mean Square F Sig.
Between Groups
84.000
2
42.000
7.159 .007
Within Groups
88.000
15
5.867
Total
172.000
17
FIGURE 12.12
The SPSS output from the ANOVA for the studying strategy experiment in Example 12.2.