- Imagine you’re the chair of the DPRC, and you want to know whether students who take a course with 3 different instructors score differently on the final exam. Below is a spreadsheet with the final exam scores for five students in each of the 3 classes taught by different instructors. You need to complete the table below, and use the data from the completed table to compute each of the following:
- dfB
- dfW
- After computing Fobt, you must review the ANOVA Critical Value Table (in weekly folder), and determine what Fcrit is. Compare Fobt to Fcrit, and state whether there is a statistically significant finding.
- If there is a significant finding, review the descriptive statistics and determine what order the groups are in.
- Write up the results of your ANOVA in APA format.
| Stewart | Graham | Legum | ||||
| X1 | X2 | X3 | ||||
| 95 | 98 | 92 | ||||
| 90 | 75 | 90 | ||||
| 88 | 80 | 86 | ||||
| 93 | 85 | 78 | ||||
| 96 | 82 | 80 | ||||
| Total | ||||||
| n1 = | n2 = | n3 = | ||||
- =
=
=
= ? + ? + ? – ?
= ?
= ? – (? + ? + ?)
= ?-?
= ?
- dfB = 𝜅 – 1 = ? (Numerator)
- dfW = N –𝜅 = ? (Denominator)
- ?
- ?
