EDD611 Inquiry I Lab 2

Lab 2 covers three commonly used statistical methods for analyzing relationships and identifying differences: correlation, cross tabulation, and one-way ANOVA.

By the end of Lab 2, students will be able to:

  • Run a correlation analysis
  • Run a Cross-tabulation
  • Run a Comparison of Means

Getting Started

Before starting your exercises, ensure that your SPSS is open.

For instructions on how to download and/or open the SPSS software, please see the following guide: EDD611 Inquiry I Getting Started

Exercises

Expand or collapse content Correlation

Correlation is a statistical method used to assess the strength and direction of the relationship between two variables you are examining. Correlation does not imply causation, meaning the relationship may not indicate a direct cause-and-effect link. You should try to avoid causal language when observing a correlation.

Step 1:

Select, Analyze, Correlate, then Bivariate

SPSS Data Editor screen highlighting teh Analyze, Correlate, and Bivariate options

Step 2:

Add a couple of factors

A) Click on the item you would like to add

B) Click the arrow button

Highlight of the variable and Variables arrow button

The selected item will populate in the Variables field.

Highlight o fthe variables selected

Step 3:

When you are done, ensure that the following are selected:

A) Pearson

B) Flag significant correlations

Highlight of the Pearson option selected and the Flag significant correlation options

Step 4:

Click the OK button

Arrow pointing to the OK button

Results:

The following Output will pop up in a new window.

Leave the window open, as the next activities will be added to the Output.

Highlight of the Output window
Expand or collapse content Cross Tabulation

The Chi-square (X2) test is a statistical method used to evaluate whethere there is a significant difference between the expected and observed frequencies in the variables. It is often used in contingency tables (cross tabulations) to assess the relationship between two or more variables. 

Step 1:

Select Analyze, Descriptive Statistics, then Crosstabs...

SPSS Data Editor screen highlighting the Analyze, Descriptive Stastitics, and Crosstabs options

Step 2:

A Crosstabs window will pop-up

Click on the Statistics button

Arrow pointing to the Statistics button

Step 3:

Make sure the Chi-square box is selected

Then click the Continue button

Highlight of the Chi-square option

Step 4: 

Click the Cells button

Arrow pointing to the Cells button

Step 5:

Make sure the Observed, Expected and Row check boxes are selected

Highlight of the Observed, Expected, and Row options

Step 6:

Click the Continue button

Arrow pointing to the Continue button

Step 7:

Next you will select your variables

A) Select the Your sex: [SEX] variable 

B) Click on the Row(s) arrow to add it to the Row(s) field

Arrow pointing to a variable selected and the rows arrow button

Step 8:

A) Select the Act: Participated in intramural sports [ACT46] variable 

B) Click on the Column(s) arrow to add it to the Column(s) field

Highlight of the variable selected and the Columns arrow button

Step 9:

Click on the OK button

Arrow pointing to the OK button

The process will run and populate the output under your previous (Correlations) output

Highlight of the Crosstab section in the Output window
Expand or collapse content Comparison of Means - One Way ANOVA

An Analysis of Variance (One-Way ANOVA) is a statistical technique that is used to compare two or more independent groups to determine whether there is statistical evidence that the associated population means are significantly different. It is most often used when you want to compare average results across different variables or groups.

Step 1:

Select Analyze, Compare Means and Proportions, then One-Way ANOVA...

SPSS Data Editor screen highlighting the Analyze, Compare Means and Proportions, and One-Way ANOVA options

Step 2:

Select the Race/Ethnicity Group [RACEGROUP] variable

Then click the arrow to add it to the Factor field

Arrow pointing to Factor arrow button

Step 3:

Select the If you borrowed money to help pay for college expenses, estimate how much you will owe as of June 30, 2019 [LOANAMT] variable

Then click the arrow to add it to the Dependent List 

Arrow pointing to Dependent List arrow button

Step 4:

Click on the Post Hoc button 

Arrow pointing to Post hoc button

Step 5:

Make sure the Tukey option is selected

Arrow pointing to Tukey option

Step 6:

Click the Continue button

Arrow pointing to Continue button

Step 7:

Click the OK button on the One-Way ANOVA window to run the process

Arrow pointing to OK button

The One-Way ANOVA will populate in your Output window below your previous process

Highlight of Anova section in Output window
Expand or collapse content Assignment

Conduct the following tests and save your output results

For each test, note any statistically significant observations and interesting observations. Additionally provide an interpretation of your findings.

Questions? Need Help?

Contact your professor: Dr. Newman at [email protected]