7) Which does not adversely affect the value of r.
a) a random sample b) extraneous variable c) a small sample d) measurement error
8) In the regression equation, y = b + mx, which variable represents the slope.
a) y b) m c) x d) b e) s
9) In the regression equation y = b + mx, which variable represents the y-intercept?
a) y b) m c) x d) b e) s
10) What is another name for the r-squared value in a regression output?
a) unexplained variation b) extraneous variable c) coefficient of determination d) measurement error