Last week we found that the average performance ratings do notdiffer between males and females in the population. Now we need tosee if they differ among the grades. Is the average performancerating the same for all grades? (Assume variances are equal acrossthe grades for this ANOVA.) While it appears that average salariesper grade differ we need to test this assumption. Is the averagesalary the same for each of the grade levels? (Assume equalvariances and use the Analysis toolpak function ANOVA.) Use theinput table to the right to list salaries under each grade level.The table and analysis below demonstrate a 2-way ANOVA withreplication. Please interpret the results. Many companies considerthe midpoint to be the market rate what is needed to hire a newemployee. Does the company on average pay its existing employeesat or above the market rate? Using the results through this weekwhat are your conclusions about gender equal pay for equal work atthis point? Last week we found that the average performanceratings do not differ between males and females in population.