Question

	sex	sex
exercise	men	women	total
no	30	20	50
yes	20	30	50
	50	50	100

identify strength, pattern/direction, PRE, and significance of association --> calculate Phi and Lambda***

alpha = 0.05

N = 100  

Answer 1

		Col 1	Col 2	Total
Row 1	Observed	30	20	50
	Expected	25.00	25.00	50.00
	O - E	5.00	-5.00	0.00
	(O - E)² / E	1.00	1.00	2.00
Row 2	Observed	20	30	50
	Expected	25.00	25.00	50.00
	O - E	-5.00	5.00	0.00
	(O - E)² / E	1.00	1.00	2.00
Total	Observed	50	50	100
	Expected	50.00	50.00	100.00
	O - E	0.00	0.00	0.00
	(O - E)² / E	2.00	2.00	4.00
		4.00	chi-square
		1	df
		.0455	p-value
		.200	Phi coefficient
		.196	Coefficient of Contingency

There is a significant association between exercise and sex.

Phi = 0.200

Lambda = 0.196