1. Descriptive Statistics
Overview

2. Mean

3. Median

4. Things to know …. Means are sensitive to outliers—use the median
(outliers are extreme values)
If the number of data points is odd, the median is the number in the middle.
If the number of data points is even, the median is the average of the numbers nearest the middle
When your data set is all categories, use the mode
(mode is value occurring most often)

5. Spread

6. SPSS Steps Open SPSS data file Click on ANALYZE Click on DESCRIPTIVE
Click on FREQUENCIES
Select variables of interest (ALL)
Click STATISTICS
Select preferred measures of central tendency and spread
Click CONTINUE
Click OK

7. Frequency Output

8. Frequency Output