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Found in Business: General-BusinessChapter 11, # 11
Q:1. Correlation analysis is the study of the relationship between variables.
a. True
b. False
2. When plotting a trend equation, the dependent variable is plotted along the horizontal axis.
a. True
b. False
3. An independent variable is the variable that is being predicted or estimated.
a. True
b. False
4. The coefficient of correlation can be in the range:
a. Between 0 and +1 (including 0 and +1)
b. Between –1 and 0 (including -1 and 0)
c. Between –1 and +1 (excluding 0)
d. Between –1 and +1 (including -1 and +1)
e. None of the above
5. Regression analysis is a technique used to:
a. Test the validity of the assumptions underlying the F-test
b. Predict the value of the dependent variable based on a confidence level
c. Predict the value of the dependent variable based on the value(s) of one (or more) independent variables
d. Predict the value of the independent variable based on the value(s) of one (or more) dependent variables
e. Verify the coefficients using individual t-tests
6. If there are four independent variables in a multiple regression equation, there are also four:
a. Y-intercepts
b. Regression coefficients
c. F-values
d. Coefficients of determination
e. All of the above
7. If the coefficient of determination is 0.87, what percentage of the variation of the model is not explained?
a. 10%
b. 13%
c. 87%
d. 90%
e. None of the above
8. If the slope of a line is 2.2 and the y intercept is 37, what is the equation that describes the line?
a. y=37x
b. y=37x + 2.2
c. y= 2.2x+37
d. x=2.2+37y
9. Given the equation for the line y= 42x + 6, what is the value of y when x is 4?
a. 10
b. 68
c. 174
d. 314
