# Chi square test

We want to calculate a chi-square statistic and compare it with the critical value

to determine whether or not GPA is significantly related to another of the factors

being studied (so as not to completely discount the survey data). They chose to

examine the relationship between the GPA of students and the teacher they had. They need

to determine whether or not teacher choice impacts a student's GPA.

1. Utilize the data provided to determine with 95% confidence whether or not the choice of

teacher affects a student's GPA.

2. Write up the null hypothesis statement. "Hypothesis statement?"

3. Calculate the chi-square statistic and compare that with the critical value for chi-square at a 95% confidence.

4. Write up your hypothesis conclusion.

Data:

# of Students w/ Given GPA

Teacher 2.01 - 2.50 2.51 - 3.00 3.01 - 3.50 3.51 - 4.00

A 68 74 73 78 = 293

B 70 73 75 77 = 295

C 69 75 72 76 = 292

Total 207 222 220 231

Total 880

https://brainmass.com/statistics/chi-squared-test/chi-square-test-256822

#### Solution Summary

The solution provides step by step method for the calculation of test statistic for chi square test. Formula for the calculation and Interpretations of the results are also included.