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OMGT Exam 2 Questions and Answers
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OMGT Exam 2 Questions and Answers
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OMGT Exam 2 Questions and AnswersThe t-statistic for a correlation of 50% with a sample size of 10 is ... - Answer-not
statistically significant.
If the sample covariance is 100 for a sample size of 25, then the Excel calculated
covariance is approximately ... - Answer-None of the other answers
If the sample covariance is 100 for a sample size of 50, then the Excel calculated
covariance is approximately ... - Answer-None of the other answers.
If the sample covariance between two variables is 50, the correlation coefficient is 0.75,
and the standard deviation of one of the variables is 10, then the standard deviation of
the other variable is approximately ... - Answer-6.67
The correlation in the data image below is ... - Answer-positive, but not +1.
If the correlation between two variables X and Y is -0.50, then ... - Answer-there is a
negative relationship between the variables.
For a simple linear regression model, Y = a + bX, ... - Answer-Y is the dependent
variable.
Suppose that the estimated slope of the linear relationship, Y = a + bX, is 2, the average
of X is 15, and the average of Y is 50, then the estimated y-intercept of the linear
relationship is ... - Answer-20
For a multiple linear regression model, Y = 5 + 10 X1 + X2, if X1=X2 and the estimated
value is 100, then ... - Answer-X1 is greater than 4
If the adjusted-R2 for a four-variable model is greater than the R2 for an included three-
variable model then this suggests ... - Answer-that the model expansion is justified.
If the standard error of the regression is $50,000 and the average of the dependent
variable is $10,000, then the coefficient of variation is ... - Answer-500%
For a multiple linear regression model, Y = 5 + 10 X1 + 15 X2, the estimated value at
X1=5, X2=5 is ... - Answer-more than 100.
If the standard error of a regression is $10,000 and the average value of the dependent
variable is $50,000, then the coefficient of variation is ... - Answer-20%
The adjusted-R2 for a model with six variables is ... - Answer-may be either larger or
smaller than the adjusted-R2 for an included model with five variables.
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