Question
The following information is obtained to study the relationship between average rainfall $($in $cm.)$ and the yield of maize $($in quintal per hectare$)$ in different talukaa of Gujarat.
Estimate the yield of maize when the rainfall is $60 \ cm$.
| Particulars | Rainfall (cm) x | Yield of maize (quintal per hectare) y |
| mean | $82$ | $180$ |
| variance | $64$ | $225$ |
| Correlation coefficient $0.82$ | ||
