Week Units Total Etching Cost

$110$ $ $27$

$2420$

$31227$

$4522$

$51025$

$61529$

$56$ $ $150$

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

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

Required:

$2-$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$.$