The intercept and slope of Years in the regression of Salary on Years, Group, and the Years * Group interaction (Table 25.5) match the intercept and slope in the simple regression for female managers (Table 25.3). The standard errors, however, don€™t match. Why not?

Table 25.5

Table 25.3

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Estimate 130.989 1.176 4.611 t-Statistic 37.53 2.89 Term Intercept Std Error 3.490 0.408 p-Value <.0001 0.0044 Years Group 0.3066 4.497 1.03 Group X Ycars 0.462 0.3709 -0.90 -0.415 Male Female 0.139 0.093 11.225 59 Std Error Se 12.059 115 Estimate Term Estimate Std Error 130.989 3.324 Intercept 135.600 2.901 1.176 0.388 0.223 Years 0.761