Below is a correlation matrix for a study on intelligence. Xi is the person\'s a

Question

Below is a correlation matrix for a study on intelligence. Xi is the person's age in years, Xa is the person's education level in years, X, is the person's income level 4. in thousand of dollars, X4 is the person's height (in inches), and Xs is the person's score on an IQ test. (10 points) Xa -31 1.00 98 12 57 Xj .68 98 1.00 30 Xi 1.00 31 26 57 12 30 1.00 -24 1.00 a. What is the correlation between a person's age and a person's IQ re? Interpret the results Is the correlation between a person's age and a person's height b. positive of negariation betveen a person's income what is the correlation between a person's income and a person's education level? what is the correlation between X2 and Xs? results - Interpret the results c. Interpret the results d Interpret the

Explanation / Answer

X1 = Person age

X2 = Person education level

X3 = Person income level

X4 = Person height

X5 = Person IQ score

a) The correlation between a person's age and a person's IQ score is

Corr(X1, X5) = 0.26

A weak positive linear relationship is exist in person's age and a person's IQ score

b) The correlation between a person's age and a person's height is

Corr(X1,X4) = -0.5

A moderate negative relationship is exist in person's age and a person's height.

c) The correlation between a person's income and a person's education level is

Corr(X2, X3) =0.98

A perfect positive linear relationship existin person's income and a person's education level

d) The correlation between X2 and X5 is

COrr(X2,X5) = 0.57

A moderate positive relationship exist in X2 and X5

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