A researcher sureys a group of working married women and reports the following results for the first four surveyed:
Person % of contribution to household income % contribution to housework
x Zx Y Zy
C1 601.34 70-1.15
F3 30 -1.34 100 1.61
B8 40 -.45 80 -.23
J2 50 .45 80 -.23
M= 45 SD = 11.18 M = 82.5 SD = 10.9 r = ?.92
1. Give the Z score prediction formula for predicting proportion of housework done from proportion of income contributed.
2. Predict the contribution to housework for a woman who provides 90% of the income.
3. Explain what you have done to a person who is familiar with correlation but not with regression.