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

تمرين 2

Note: Data files for these exercises are available at the publisher's website for this text, http://www.pearsonhighered.com/stern2e.
As previously described in Exercise 1 , in April, 1992, the minimum wage in New Jersey went from $4.25 to $5.05 an hour. The data in file MinWage.sav was obtained from randomly selected fast food restaurants about one month before and eight months after the minimum wage increase took effect.
1. Determine whether the change in the price of a small fry before ( Pfry1 ) and after ( Pfry2 ) the wage raise differs significantly in New Jersey
2. Perform the analysis posed above for the restaurants in Pennsylvania.
Exercise 1
The data below show the number of crime victims as a function of the variables type of crime (rape/sexual assault, robbery) and relation between assailant and victim (stranger, non-stranger). Use the data to determine if the variables are related.