a) The educational level of women whose husband has completed 18 years of schooling:

18 is average +2SD

18 = 12 + 6 = 12 + 2SD

now multiply the correlation coefficient (0.5) by 2: 0.5 * 2 = 1

then multiply 1 by SD of 3: 1 * SD = 1 * 3 = 3

now add 3 to 12: 12 + 3 = 15

15 is the educational level of a women

b) The educational level of man whose wife has completed 15 years of schooling:

15 is average +1SD

15 = 12 + 3 = 15 + 1SD

now multiply the correlation coefficient (0.5) by 1: 0.5 * 1 = 0.5

then multiply 0.5 by SD of 3: 0.5 * SD = 0.5 * 3 = 1.5

now add 1.5 to 12: 12 + 1.5 = 13.5

13.5 is the educational level of a men

c) If all the data were aviable, we colud see in the scatter diagram that. the variation around the least squre lines is very high, that giving this conflcting results.

18 is average +2SD

18 = 12 + 6 = 12 + 2SD

now multiply the correlation coefficient (0.5) by 2: 0.5 * 2 = 1

then multiply 1 by SD of 3: 1 * SD = 1 * 3 = 3

now add 3 to 12: 12 + 3 = 15

15 is the educational level of a women

b) The educational level of man whose wife has completed 15 years of schooling:

15 is average +1SD

15 = 12 + 3 = 15 + 1SD

now multiply the correlation coefficient (0.5) by 1: 0.5 * 1 = 0.5

then multiply 0.5 by SD of 3: 0.5 * SD = 0.5 * 3 = 1.5

now add 1.5 to 12: 12 + 1.5 = 13.5

13.5 is the educational level of a men

c) If all the data were aviable, we colud see in the scatter diagram that. the variation around the least squre lines is very high, that giving this conflcting results.