Part II

Using Polit2SetB data set, create a scatterplot using the following variables: x-axis = body mass index (bmi) and the y-axis = weight-pounds (weight).

Follow these steps in SPSS:

1. Click on Graphs, then click on Legacy Dialogs, then click on Scatter/Dot. 

2. Click on Simple Scatter and then click on Define. 

3. Click on weight-pounds and move it to the y-axis box and then click on body mass index and move it to the x-axis box. 

4. Click on OK.

To run descriptives for bmi and weight, do the following in SPSS: 

5. Click on Analyze, then click on Descriptives Statistics, then Descriptives.

6. Click on the first continuous variable you wish to obtain descriptives for (body mass index), and then click on the arrow button and move it into the Variables box. Then click on weight-pounds, and then click on the arrow button and move it into the Variables box.

7. Click on the Options button in the upper-right corner. Click on mean and standard deviation.

8. Click on Continue and then click on OK. 

Assignment:

1. What is the mean and standard deviation for weight and bmi?

2. Describe the strength and direction of the relationship between weight and bmi.

3. Describe the scatterplot. What information does it provide to a researcher?