=+39. Managers’ hourly wages. What affects marketing managers’ hourly wages? To find out, mean hourly wages were retrieved from the U.S. Bureau of Labor Statistics for two managerial occupations in marketing (Sales managers, Advertising managers) for a random sample of states from three regions (Midwest, Southeast, West; www.

bls.gov/data/#wages). Here are boxplots showing mean hourly wages for the two marketing occupations and the three regions as well as the results for a two-way ANOVA.

ADV Sales Manager Type 20 30 40 50 60 Hourly Wage MW SE W Region 20 30 40 50 60 Hourly Wage Source DF Sum of Squares Mean Square F-ratio P-value Manager Type 1 1325.93 1325.93 31.84 60.0001 Region 2 153.55 76.78 1.84 0.176 Interaction 2 32.74 16.37 0.39 0.678 Error 30 1249.32 41.64 Total 35 2761.55 M20_SHAR8696_03_SE_C20.indd 764 14/07/14 7:37 AM Exercises 765