From Exercise 1, we also have data on how long each per-son has been with the company (tenure) categorized into three levels: less than 1 year, between 1 and 5 years, and more than 5 years. A table of the two variables together looks like:

a) Find the marginal distribution of the tenure.
b) Verify that the marginal distribution of the education level is the same as that given in Exercise 1.

Transcribed Image Text:

None 10 42 More Than 5 Yers 112 BA 50 112 PhD 12 15 <1 Year 1-5 Years 20 9 1 27 63 30