The accompanying data represent the number of daysabsent,x, and the final examscore,y, for a sample of college students in a general education course at a large state university.
Homework Answers
Sol:
UPLOADED IMAGE IS BLURRED PLEASE
CONFIRM WHETHER THE GIVEN BELOW DATA IS CORRECT
| No of absences | Finla exam score |
| 0 | 88.8 |
| 1 | 86.7 |
| 2 | 83.2 |
| 3 | 80.7 |
| 4 | 78.3 |
| 5 | 74.6 |
| 6 | 64.4 |
| 7 | 71.7 |
| 8 | 65.8 |
| 9 | 68.6 |
IF THE ABOVE DATA IS CORRECT
regression equation from excel
| Coefficients | Standard Error | t Stat | P-value | Lower 95% | Upper 95% | |
| Intercept | 88.23091 | 1.957091 | 45.08267 | 6.47E-11 | 83.71785 | 92.74397 |
| No of absences | -2.65576 | 0.366597 | -7.24436 | 8.85E-05 | -3.50113 | -1.81038 |
Final exam score= 88.23091-2.65576*no of absences
ANSWER:
y^=-2.656x+88.231
PLEASE CONFIRM DATA
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