A Visual Approach to SPSS for Windows 2nd Edition by Leonard Stern

تمرين 3

The data shown in the table represent the number of words correctly spelled by different randomly selected members of four age groups.
Number of Words By Age Category
Use the data to answer these questions:
1. Does age category significantly affect mean number of words spelled correctly In the ANOVA performed to answer the question, request a test of homogeneity of variance, descriptive statistics, and a means plot.
2. After inspecting the data, a researcher decides to determine if high school students are significantly different than each of the other individual age groups on the mean number of words correctly spelled (i.e., high school vs. young adult, high school vs. middle-aged, high school vs. retired). What conclusions should be drawn