IBM SPSS Correlation assignment

cf_assessment_2_step_by_step_instructions1.docx

Home >Mathematics homework help >Statistics homework help >IBM SPSS Correlation assignment

CU_Horiz_RGB

IBM SPSS Step-by-Step Guide: Correlations

Note: This guide is an example of creating correlation output in SPSS with the grades.sav file. The variables shown in this guide do not correspond with the actual variables assigned in Assessment 2. Carefully follow the assignment instructions for a list of assigned variables. Screen shots were created with SPSS 21.0.

Assumptions of Correlation

To complete Section 2 of the DAA, you will generate SPSS output for histograms, descriptive statistics, and a scatter plot. Refer to the Assessment 2 instructions for a list of assigned variables. The example variables quiz1 and quiz2 are shown below.

Step 1. Open grades.sav in SPSS.

Screenshot of SPSS showing Open Data dialog box with grades.sav selected in the File name box.

Step 2. Generate SPSS histogram output for the Assessment 2 variables. (See the step-by-step guide from Assessment 1 for complete instructions on generating histograms.)

On the Graphs menu, point to Legacy Dialogs and click Histogram…

Screenshot with Graphs menu, Legacy Dialogs, and Histogram selected.

Create separate histograms for the two assigned variables for Assessment 2.

Copy the two histograms and paste them into Section 2 of the DAA template.

Provide a visual interpretation for each histogram. The examples of quiz1 and quiz2 are shown below.

Example histogram for quiz1. Example histogram for quiz2.

Step 3. Next, you will generate descriptive statistics for your Assessment 2 variables. (See the step-by-step guide from Assessment 1 for complete instructions on generating descriptive statistics output.)

On the Analyze menu, point to Descriptive Statistics and click Descriptives…

SPSS Statistics Data Editor screen shot, with Analyze menu, Descriptive Statistics, and Descriptives selected.

Copy the descriptive statistics output and paste it into the DAA Template.

Below the output, interpret the skewness and kurtosis values.

Screenshot of Descriptive Statistics output in table form with right-click menu open and Copy selected.

Step 4. Create the SPSS scatter plot for your assigned variables.

On the Graphs menu, point to Legacy Dialogs and click Scatter/Dot…

Screenshot with Graphs menu, Legacy Dialogs, and Scatter/Dot selected.

In the Scatter/Dot dialog box, select Simple Scatter and then click the Define button.

Scatter/Dot dialog box with Simple Scatter selected.

In the Simple Scatterplot dialog box, select the assigned variables for the X Axis (horizontal) and Y Axis (vertical) as required in the Assessment 2 instructions. (The examples of quiz1 and quiz2 are shown below.) Click OK.

Simple Scatterplot dialog box, with quiz2 in Y Axis box and quiz1 is in X Axis box.

Copy the scatter plot and paste it into the DAA Template.

Then provide an interpretation of the scatter plot.

Scatter plot with right-click menu showing and Copy selected.

Intercorrelation Matrix

To complete DAA Section 4, generate the SPSS intercorrelation matrix of all assigned Assessment 2 variables. The example variables of quiz1, quiz2, quiz3, and quiz4 are shown below.

Step 1. On the Analyze menu, point to Correlate and click Bivariate…

Analyze menu, Correlate, and Bivariate selected.

Step 2. In the Bivariate Correlations dialog box:

Move the Assessment 2 variables into the Variables box.

Select the Pearson option, the Two-tailed option, and the Flag significant correlations option.

Click OK.

Screenshot of Bivariate Correlations dialog box. For Correlation Coefficients, the Pearson box is selected. For Test of Significance, Two-tailed is selected. Flag significant correlations box is selected.

Step 3. Copy the intercorrelation matrix and paste it into Section 4 of the DAA Template. Then interpret it as instructed in the assignment instructions.