George Caloz & Frres, 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: Week Units Total Etching Cost 1 10 $ 26 2 7 24 3 18 31 4 6 20 5 12 27 6 13 66 27 $ 155 For planning purposes, management wants to know the variable etching cost per unit and the total fixed etching cost per week. Required: 1. Prepare a scattergraph plot. (Plot etching costs on the vertical axis and units on the horizontal axis.)