The Psychology Club is trying to submit their budget for the semester to the Office of Student Involvement. In order to continue to receive funding in future semesters, there needs to be close predictions between what is expected and what is actually observed. They request funds for four categories of promotional items based on 300 students who registered for the club. Use the data below and answer the questions. Shirts Hats Cups Stickers Observed 198 43 55 4 Expected 125 75 80 20 By hand, calculate a Chi-Square Goodness of Fit and submit your work to the assignments folder. a. What is the χ2obt? b. What is the df? c. What is the χ2crit?
The Psychology Club is trying to submit their budget for the semester to the Office of Student Involvement. In order to continue to receive funding in future semesters, there needs to be close predictions between what is expected and what is actually observed. They request funds for four categories of promotional items based on 300 students who registered for the club. Use the data below and answer the questions.
| Shirts | Hats | Cups | Stickers | |
| Observed | 198 | 43 | 55 | 4 |
| Expected | 125 | 75 | 80 | 20 |
By hand, calculate a Chi-Square Goodness of Fit and submit your work to the assignments folder.
a. What is the χ2obt?
b. What is the df?
c. What is the χ2crit?
d. What is the effect size? Interpret.
Using the Goodness of Fit calculator, confirm your calculations.
e. What is the uncorrected χ2obt?
f. Overall, interpret this goodness of fit test. Does it look like the Psychology Club officers did a good job of predicting the frequencies?
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