Question
The following measures are obtained to study the relation between rainfall in $cm .( X )$ and yield of Bajri in quintal per hectare $( Y )$ in ten different regions during monsoon :$n =10, \overline{ x }=40, \overline{ y }=175, S _{ x }=12, \operatorname{Cov}( x , y )=360$Obtain the regression. line of yield, $Y$ on rainfall $X$. Estimate the yield of Bajri when the rainfall $X$ is $30 cm$. E