A researcher is studying the family in a region she has gath

A researcher is studying the family in a region. she has gathered the following computer output from a sample of 35 families Write out the regression equation. Should the independent variable age be included in the analysis? why or why not? should the independent variable education be included in the analysis? why or why not?

Solution

a)

Family Income = 18.25 + 4.80*Education + 0.74*Age + 0.06*Family

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b)

As

t(Age) = 0.74/0.55 = 1.345454545

and as alpha = 0.05, two tailed, df = n - 2 = 33,

tcrit = 2.0345

As t < 2.0345, WE DO NOT INCLUDE AGE. IT IS NOT SIGNIFICANT.

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c)

As t(education) = 3.556 > 2.0345, we WILL INCLUDE EDUCATION. IT IS SIGNIFICANT.