2. The following data represent Salary, years of experience, andrank (A, B, or C). Salary is the dependent variable. For class andthe interaction effect between class and years of experience, dothe following: a. Indicate a scheme (method) of coding “Rank”. Howmany variables are needed? b. Using the coding method given in Parta, give the data (the numbers) that you would input for thefollowing cases including the interaction term between rank andexperience: Absenteeism (Hrs/Yr) Y Experience (Years) X1 Rank 36.54 B 27.7 1 A 32.2 5 C In the heading, give the variable. In thebody, give the numbers. You might not need all columns.