IBM SPSS Statistics > Correlation Coefficient SPSS
Correlation Coefficient SPSS: Overview.
The Correlation Coefficient (r) is a test of how strongly data sets are related to each other. The test is commonly used along with linear regression. which gives us the linear relationship between two variables. The coefficient then gives us the strength of that relationship.
Correlation Coefficient SPSS: Steps
Watch the video or read the steps below:
Step 1: Click “Analyze,” then click “Correlate,” then click “Bivariate.” The Bivariate Correlations window will appear.
Step 2: Click one of the variables in the left-hand window of the Bivariate Correlations pop-up window. Then click the center arrow to move the variable to the “Variables:” window. Repeat this for a second variable.
Step 3: Click the “Pearson” check box if it isn’t already checked. Then click either a “one-tailed” or “two-tailed” test radio button. If you aren’t sure if your test is one-tailed or two-tailed, see: Is it a a one-tailed test or two-tailed test ?
Step 4: Click “OK” and read the results.
Each box in the output gives you a correlation between two variables. For example, the PPMC for Number of older siblings and GPA is -.098, which means practically no correlation. You can find this information in two places in the output. Why? This cross-referencing columns and rows is very useful when you are comparing PPMCs for dozens of variables.
Tip #1: It’s always a good idea to make an SPSS scatter plot of your data set before you perform a test like Correlation Coefficient SPSS. That’s because SPSS will always give you some kind of answer and will assume that the data is linearly related. If you have data that might be better suited to another correlation (for example, exponentially related data) then SPSS will still run Pearson’s for you and you might get misleading results.
Tip #2. Click on the “Options” button in the Bivariate Correlations window if you want to include descriptive statistics like the mean and standard deviation.
Correlation Coefficient SPSS: Easy Calculation Steps was last modified: March 5th, 2015 by Andale