You can use the Santa Fe Grill database with the SPSS software to calculate measures of central tendency. After splitting the file into the two restaurant samples, the SPSS clickthrough sequence is ANALYZE → DESCRIPTIVE STATISTICS → FREQUENCIES. Let’s use X 25 –Frequency of Eating as a variable to examine. Click on X 25 to highlight it and then on the arrow box for the Variables window to use in your analysis. Next, open the Statistics box and click on Mean, Median, and Mode, and then Continue and OK. The dialog boxes
for this sequence are shown in Exhibit 11.2 .