POLS210

Lambda

St. Algebra College has a problem with attrition. A sizable number of nongraduating students do not return to classes each semester. Is attrition importantly related to status or gender? For each table below, calculate a lambda and answer how strong the association (if any) is.

	Status
Attrition	Part-time	Full-time	Totals
Returned spring semester	42	353	395
Did not return	87	50	137
Totals	129	403	532

	Gender
Attrition	Male	Female	Totals
Returned spring semester	322	73	395
Did not return	57	80	137
Totals	379	153	532

Answers

0.33 (Strong relationship, 33% reduction in errors)

0.05 (Little to very weak, 5% reduction in errors)