A researcher finds a correlation of r = 0.60 between IQ and creativity scores fo

Question

A researcher finds a correlation of r = 0.60 between IQ and creativity scores for a sample of n = 20 college students. Using these data, the researcher computes the regression equation for predicting creativity from IQ.

a. What percentage of the variance in creativity scores is predicted from IQ., and what percentage is not predicted?
b. If SSr = 10, does the regression equation predict a significant proportion of the variance in creativity?
c. If SSr = 100, does the regression predict a significant proportion of the variance in creativity?

Explanation / Answer

a) We have r=0.60, so sqauring the correlatoin gives the percentage of the variance in creativity scores predicted from IQ i.e. R2 =0.60*0.60=0.36. The 36% of the variance can be explained. b) No, the regression equation may not predict a significant proportion of the variance in creativity. c) Yes, the regression equation may predict a significant proportion of the variance in creativity.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.