Math Is Fun Forum

Prakash Panneer

Member

Registered: 2006-06-01

Posts: 110

Regression

A computer printout of a linear regression predicting INCOME based on years of EDUCATION contained:

B    = -92040,   s = 3213       t = 6.67
  0

B   = 228        R = 0.66        df = 23
  1

Which of the following is a correct interpretation of B   ?
                                                                            0

A) We expect to predict INCOME to within 2(92040) of its true value using the equation.
B) We estimate INCOME to decrease $92040 for every 1 year of increase in EDUCATION.
C) We estimate the lowest INCOME of the highest value of EDUCATION of -$92,040
D) The value is highly suspicious depending on whether the years of education of 0 is possible and reasonable.
E) None of these are correct.

Which of the following statements is not correct?

A) The correlation coefficient is approximately 0.81
B) R^2 is a measure of the direction of the relationship between INCOME and EDUCATION.
C) The slope of the regression line is 228.
D) It cannot be determined from the information in the printout which quantity is the independent variable.
E) All are correct.

Thanks in advance.

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