Assignment:
Either calculate the regression coefficient by hand, or perform a linear regression using your spreadsheet software. What is the correlation coefficient? Are the data correlated?
| Month |
Chance of rain (%) |
Umbrella Sales (units) |
| January |
22 |
1420 |
| February |
26 |
1380 |
| March |
32 |
1440 |
| April |
41 |
1635 |
| May |
36 |
1744 |
| June |
32 |
1486 |
| July |
28 |
1208 |
| August |
34 |
1145 |
| September |
38 |
1337 |
| October |
44 |
1388 |
| November |
32 |
1456 |
| December |
38 |
1684 |
Your answer must be typed, double-spaced, Times New Roman font (size 12), one-inch margins on all sides, APA format and also include references.