By running regression of the form Y = a+bX
Where Y is actual and X is period, we get results of the
form,
SUMMARY OUTPUT |
|
|
|
|
|
|
|
|
|
|
|
|
|
Regression Statistics |
|
|
|
|
|
Multiple R |
0.61 |
|
|
|
|
|
R Square |
0.37 |
|
|
|
|
|
Adjusted R Square |
0.27 |
|
|
|
|
|
Standard Error |
241.49 |
|
|
|
|
|
Observations |
8 |
|
|
|
|
|
|
|
|
|
|
|
|
ANOVA |
|
|
|
|
|
|
|
df |
SS |
MS |
F |
Significance F |
|
Regression |
1 |
2,09,738.67 |
2,09,738.67 |
3.60 |
0.11 |
|
Residual |
6 |
3,49,895.33 |
58,315.89 |
|
|
|
Total |
7 |
5,59,634.00 |
|
|
|
|
|
|
|
|
|
|
|
|
Coefficients |
Standard Error |
t Stat |
P-value |
Lower 95% |
Upper 95% |
Intercept |
361.00 |
188.17 |
1.92 |
0.10 |
-99.42 |
821.42 |
Period |
70.67 |
37.26 |
1.90 |
0.11 |
-20.51 |
161.84 |
Period |
Actual |
1 |
300 |
2 |
540 |
3 |
885 |
4 |
580 |
5 |
416 |
6 |
760 |
7 |
1191 |
8 |
760 |
9 |
997 |
10 |
1068 |
11 |
1138 |
Forecasts,
Period 9 = 361+70.67*9 = 997.03
Period 10 = 361+70.67*10 = 1067.7
Period 11 = 361+70.67*11 = 1138..37