is there a relationship? chi-square test. observed results a study was conducted to see if the gpa...

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IS THERE A RELATIONSHIP? Chi-Square Test

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Page 1: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

IS THERE A RELATIONSHIP?

Chi-Square Test

Page 2: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

Observed Results

A study was conducted to see if the GPA of baseball fans was related to what hometown baseball team they liked: THE CUBS or THE SOX.

Observed ResultsUnweighted GPA

2.01 - 3.0

3.01 – 4.0

Total

Baseball Team

Preference

Cubs 28 64 95 187

Sox 124 41 19 184

Total 152 105 114 371

Page 3: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

Expected Calculations Table

Step 1: Create an Expected Calculations Table

Expected Calculations

0-2.0 2.01-3.0 3.01-4.0

Cubs

Sox

Page 4: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

Expected Results

Step 2: Calculate the Expected Results using the graphing calculator.

Expected Results

0-2.0 2.01-3.0 3.01-4.0

Cubs 76.61 52.92 57.46

Sox 75.39 52.08 56.54

Page 5: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

Chi Square Expanded Form

Page 6: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

Chi-Square

 

Page 7: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

What is our Hypothesis?

Page 8: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

What is our Test Criteria?

 

Page 9: IS THERE A RELATIONSHIP? Chi-Square Test. Observed Results A study was conducted to see if the GPA of baseball fans was related to what hometown baseball

Conclusion