Exercise $5$A$-5($Algo$)$ Least$-$Squares Regression $[$LO$5-11]$

George Caloz & Fr$$res$,$ located in Grenchen, Switzerland, makes luxury custom watches in small lots. One of the company's products, a platinum diving watch, goes through an etching process. The company has recorded etching costs as follows over the last six weeks:

$\backslash$table$[[$Week$,$Units,$\backslash$table$[[$Total$],[$C$]],\backslash$table$[[$Etching$],[$Cost$]]],[1,9,,21],[2,12,,25],[3,13,,30],[4,9,$&$.,20],[5,11,,25],[6,18,$a$,34],[72,$$$,155]]$

For planning purposes, management would like to know the variable etching cost per unit and the total fixed etching cost per week.

Exercise $5$A$-5$ Part $2($Algo$)$

$2-$a$.$ Using the least$-$squares regression method, estimate the variable etching cost per unit and the total fixed etching cost per week.

$2-$b$.$ Express these estimates in the form $Y=a+bx.$

Complete this question by entering your answers in the tabs below.

Req $2A$

Using the least$-$squares regression method, estimate the variable etching cost per unit and the total fixed etching cost per week. $($Round your answers to $2$ decimal places.$)$

Fixed etching cost per week

Variable etching cost per unit