BUAL 2650 GUPTA LATEST
EXAM 2
The correlation coefficient may assume any value between
a. 0 and 1
b. −∞ and ∞
c. 0 and 8
d. −1 and 1
e. −1 and 0 - ANSWERS-d. −1 and 1
The following results were obtained as part of a simple regression
analysis.
r2 = .9162F
statistic from the F table = 3.59
Calculated value of F from the ANOVA table = 81.87
α = .05
p-value = .000
The null hypothesis of no linear relationship between the dependent
variable and the independent variable
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1
, BUAL 2650 GUPTA LATEST
EXAM 2
a. is rejected
b. cannot be tested with the given information
c. is not rejected
d. is not an appropriate null hypothesis for this situation. - ANSWERS-a.
is rejected
The coefficient of determination measures the ________ explained by
the simple linear regression model.
a. correlation
b. proportion of variation
c. standard error
d. mean square error - ANSWERS-b. proportion of variation
The ________ of the simple linear regression model is the value of y
when the mean value of x is zero.
a. y-intercept
b. slope
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2
, BUAL 2650 GUPTA LATEST
EXAM 2
c. independent variable
d. response variable - ANSWERS-a. y-intercept
In multiple regression analysis, the explained sum of squares divided by
the total sum of squares yields the __________.
a. standard error
b. F statistic
c. R2
d. adjusted R2 or R−2
e. t statistic - ANSWERS-c. R2
Which one of the following is not an assumption about the residuals in a
regression model?
a. constant variance
b. independence
c. normality
d. variance of zero
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3
EXAM 2
The correlation coefficient may assume any value between
a. 0 and 1
b. −∞ and ∞
c. 0 and 8
d. −1 and 1
e. −1 and 0 - ANSWERS-d. −1 and 1
The following results were obtained as part of a simple regression
analysis.
r2 = .9162F
statistic from the F table = 3.59
Calculated value of F from the ANOVA table = 81.87
α = .05
p-value = .000
The null hypothesis of no linear relationship between the dependent
variable and the independent variable
END OF
PAGE
1
, BUAL 2650 GUPTA LATEST
EXAM 2
a. is rejected
b. cannot be tested with the given information
c. is not rejected
d. is not an appropriate null hypothesis for this situation. - ANSWERS-a.
is rejected
The coefficient of determination measures the ________ explained by
the simple linear regression model.
a. correlation
b. proportion of variation
c. standard error
d. mean square error - ANSWERS-b. proportion of variation
The ________ of the simple linear regression model is the value of y
when the mean value of x is zero.
a. y-intercept
b. slope
END OF
PAGE
2
, BUAL 2650 GUPTA LATEST
EXAM 2
c. independent variable
d. response variable - ANSWERS-a. y-intercept
In multiple regression analysis, the explained sum of squares divided by
the total sum of squares yields the __________.
a. standard error
b. F statistic
c. R2
d. adjusted R2 or R−2
e. t statistic - ANSWERS-c. R2
Which one of the following is not an assumption about the residuals in a
regression model?
a. constant variance
b. independence
c. normality
d. variance of zero
END OF
PAGE
3
