Question:

$18\mathrm{.}1$

The owners of the Java Central Cafe want to develop a forecast for their coffee products. They believe that the sales are closely related to the outside temperature. They have collected sales data and the average monthly temperatures for the last year.

The data gathered is in the table below: $($you need to complete table with the missing data$)$

$\backslash$table$[[$Month$,$Avg Temp,Sales $($cups$),xy,x2,y^2$