T F 1. If the correlation coefficient between two variables is -1, it means that
ID: 2922910 • Letter: T
Question
T F 1. If the correlation coefficient between two variables is -1, it means that the two variables are not related
T F 2. In regression, the variable that is being predicted is usually referred to as the independent variable.
T F 3. The slope of the regression line, y = 21 5x, is 5..
T F 4. For the regression line, y = 21 5x, 21 is the y-intercept of the line..
T F 5 The difference between the actual y value and the predicted y value found using a regression equation is called the residual.
T F 6. One of the assumptions of simple regression analysis is that the residuals (error terms) are exponentially distributed
T F 7. The proportion of variability of the dependent variable (y) accounted for or explained by the independent variable (x) through the regression equation is called the coefficient of determination.
T F 8. The range of admissible values for the coefficient of determination is 1 to +1.
T F 9 A t-test is used to determine whether the coefficients of the regression model are significantly different from zero
T F 10 Regression output from Excel software includes an ANOVA table.
Explanation / Answer
Answer :
1) False.
2) False.
3) False.
4) True.
5) True.
6) False.
7) False.
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