The following data is used to apply a linear regression algorithm with least squares regression line Y = a1X. Then, the approximate value of a1 is given by (X-Independent variable, Y-Dependent variable)
| X |
1 |
20 |
30 |
40 |
| Y |
1 |
400 |
800 |
1300 |
a. 27.876
b. 32.650
c. 40.541
d. 28.956
