Question

A researcher hired by a computer software development firm is interested in the effect of educational level on the job knowledge of the company’s employees. He administers a test to a randomly selected group of people who have different educational backgrounds. In a sample of 15 employees, 6 has a high school diplomas, 5 have a bachelor’s degree and 4 have a master’s degree. The results are as follows:

High School Bachelor’s Master’s

MEAN: High School - 83, Bachelor's - 84.4, Master's - 85

Total sum of squares = 584, Sum of squares due to errors = 573.2

a) What would be your conclusion using a significance level of 0.05?

b) Is there any significant difference in job knowledge between high school group and master’s group? Use α = 0.05

Answer 1

(a)

(b) Since from Part (a), we have seen that there is insignificant difference in employees who have different educational backgrounds at 5% level of significance, there is insignificant difference in job knowledge between high school group and master’s group.