Econometrics Exam Practice || Questions and 100% Accurate Answers.
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Course
Econometrics
Institution
Econometrics
You estimate a model with 4 explanatory variables, and in intercept from a data set with 200 observations. To test hypotheses on this model you should use a t-distribution with how many degrees of freedom?
a. 196
b. 194
ity
d. 195 correct answers d. 195
When should a right-tailed significanc...
Econometrics Exam Practice || Questions and 100%
Accurate Answers.
You estimate a model with 4 explanatory variables, and in intercept from a data set with 200
observations. To test hypotheses on this model you should use a t-distribution with how many
degrees of freedom?
a. 196
b. 194
c.infinity
d. 195 correct answers d. 195
When should a right-tailed significance test be used?
a. when economic theory suggests the coefficient should be positive
b. when it allows you to reject the null hypothesis
c. when economic theory suggests the coefficient should be negative
d. When you know the true value of B2 is positive correct answers a. when economic theory
suggests the coefficient should be positive
How should Bk in the general multiple regression model be interpreted?
a. the number of units of change in the expected value of y for a one-unit increase in xk when all
remaining variables are unchanged
b. the magnitude by which xk varies in the model
c. the amount of variation in y explained by xk in the model
d. the number of variables used in the model correct answers a. the number of units of change in
the expected value of y for a one-unit increase in xk when all remaining variables are unchanged
What does R^2, the coefficient of determination, measure?
a. the probability of the true value falling within the forecast interval
b. the p-value on the coefficient we are using to test our hypothesis of interest
c. the confidence interval of the error terms as determined by the coefficients
d. the proportion of the variation in y explained by x within the regression model correct answers
d. the proportion of the variation in y explained by x within the regression model
if elasticity is less than 1, it is a _____________ correct answers necessity, NOT a luxury
Rejecting a true null hypothesis
a. is a Type I error
b. is a type II error
c. should not happen if a valid statistical test is used
d. depends on the size of the estimation sample correct answers a. is a Type I error
interpret the meaning of r-squared correct answers coefficient of determination, shoes us that
____% of the variation is explained by the model
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