Twenty-one executives in a large corporation were randomly selected to study the effect of several factors on annual salary (expressed in $000s). The factors selected were age, seniority, years of college, number of company divisions they had been exposed to, and the level of their responsibility. The results of the regression analysis follow: 
Which independent variable has the most significant effect on annual salary?
Definitions:
Q8: The sign test is one of a
Q34: Accounting procedures allow a business to evaluate
Q39: The number of mean square errors summarized
Q54: The F distribution is useful when testing
Q64: In the Kruskal-Wallis test for the following
Q65: In multiple regression analysis, a correlation matrix
Q76: For a one-tailed test with a 0.05
Q83: When testing for differences between treatment means,
Q122: In a market research study involving 11
Q123: To compare the effect of weather on