Job satisfaction of STEM faculty. Are university faculty in science, technology, engineering, and math (STEM)

disciplines more satisfied with their jobs than non-STEM faculty? And, if so, does this difference vary depending on gender? These were some of the questions of interest in a study published in the Journal of Women and Minorities in Science and Engineering (Vol. 18, 2012). A sample of 215 faculty members at a large public university participated in a survey. One question asked the degree to which the faculty members were satisfied with university policies and procedures. Responses were recorded on a 5-point numerical scale, with 1 = strongly disagree to 5 = strongly agree. Each participant was categorized according to gender (male or female) and discipline (STEM or non-STEM). Thus, a 2 * 2 factorial design was utilized.

a. Identify the treatments for this experiment.

b. For this study, what does it mean to say that discipline and gender interact?

c. A plot of the treatment means is shown below. Based on this graph only, would you say that discipline and gender interact?

d. Construct a partial ANOVA table for this study. (Give the sources of variation and degrees of freedom.)

e. The journal article reported the F-test for interaction as F = 4.10 with p@value = .04. Interpret these results.

Transcribed Image Text:

Estimated Marginal Means 3.30- 3.20 3.10- 3.00 2.90- Men Women STEM Non- STEM