Arts & Sciences Tenure/Track Faculty Salary Analysis

Traditional methodology: model based on male population is applied to female population to predict female salaries
Variables include: discipline groups, years here, years since terminal degree, squared terms, rank dummy variables

Mean female residuals, standard errors and z-scores Comparison of analyses for 1986-87, 1997-98 and 1999-2000

1986-87 1997-98 1999-00

model sq
terms rank log
scale R² standard
error difference:
mean
female
residual z-score R² standard
error difference:
mean
female
residual z-score R² standard
error difference:
mean
female
residual z-score

models with rank variable

1 y y y 0.74 2.36% -0.90% -0.38 0.61 2.23% -0.20% -0.09 0.58 2.41% 0.11% -0.05

2 y y n 0.63 995 -291 -0.29 0.51 1,826 -307 -0.17 0.47 2334 -608 -0.26

5 n y y 0.74 2.31% -1.12% -0.48 0.61 2.19% -0.18% -0.08 0.57 2.38% -0.09% 0.04

6 n y n 0.63 956 -345 -0.36 0.51 1780 -277 -0.16 0.45 2251 -372 -0.17

models without rank variable

3 y n y 0.62 2.71% -3.38% -1.25 0.47 2.69% -2.84% -1.06 0.45 2.93% -0.89% -0.30

4 y n n 0.53 1,164 -1313 -1.13 0.40 2,086 -1726 -0.82 0.38 2,673 -925 -0.35

7 n n y 0.58 2.92% -5.83% -2.00 0.43 2.82% -4.93% -1,75 0.38 3.11% -3.96% -1.27

8 n n n 0.52 1,193 -2095 -1.76 0.38 2,091 -2984 -1.43 0.32 2,671 -2957 -1.11

Note: All of the above models use the original discipline groups used in the initial Washington University study of 1986-87 data supervised by Mary Gray, Professor of Mathematics and Statistics at American University. The original selection of 11 aggregation groups appears to reflect a perception of national faculty characteristics in the 1980's.

Error processing SSI file

				1986-87				1997-98				1999-00
model	sq terms	rank	log scale	R²	standard error	difference: mean female residual	z-score	R²	standard error	difference: mean female residual	z-score	R²	standard error	difference: mean female residual	z-score
models with rank variable
1	y	y	y	0.74	2.36%	-0.90%	-0.38	0.61	2.23%	-0.20%	-0.09	0.58	2.41%	0.11%	-0.05
2	y	y	n	0.63	995	-291	-0.29	0.51	1,826	-307	-0.17	0.47	2334	-608	-0.26
5	n	y	y	0.74	2.31%	-1.12%	-0.48	0.61	2.19%	-0.18%	-0.08	0.57	2.38%	-0.09%	0.04
6	n	y	n	0.63	956	-345	-0.36	0.51	1780	-277	-0.16	0.45	2251	-372	-0.17
models without rank variable
3	y	n	y	0.62	2.71%	-3.38%	-1.25	0.47	2.69%	-2.84%	-1.06	0.45	2.93%	-0.89%	-0.30
4	y	n	n	0.53	1,164	-1313	-1.13	0.40	2,086	-1726	-0.82	0.38	2,673	-925	-0.35
7	n	n	y	0.58	2.92%	-5.83%	-2.00	0.43	2.82%	-4.93%	-1,75	0.38	3.11%	-3.96%	-1.27
8	n	n	n	0.52	1,193	-2095	-1.76	0.38	2,091	-2984	-1.43	0.32	2,671	-2957	-1.11