The true mean line is a. E(Y)= Bo + Bx b. E(Y)= bo + bx c.Found from residuals d
ID: 3251950 • Letter: T
Question
The true mean line is
a. E(Y)= Bo + Bx
b. E(Y)= bo + bx
c.Found from residuals
d. Found from the relationship between the independent observations
e. None of the above
The t-statistic or t-ratio is .
a. Used to test the statistical significance of each
b. Used to test the statistical significance overall regression model
c. Used to test to see if an additional variable which has not been observed should be included in the regression model3
d. Is close to zero when the regression model is statistically significant
e. None of the above
The adjusted (or multiple) coefficient of determination is .
a. Always less than or equal to the coefficient of determination
b. Adjusted the coefficient of determination upward for an increased number of k-independent variables in the multiple regression model
c. Used to determine if a multiple regression model is statistically significant
d. All of the above
e. None of the above
Explanation / Answer
Q) The true mean line is
Correct option is A. This is the definition of Simple linear regression equation
Q)The t-statistic or t-ratio is
Correct Option is A. T statistics can be used to test the significance of each independent variable
Q)The adjusted (or multiple) coefficient of determination is
Correct Option is A. adjusted (or multiple) coefficient of determination is adjusted downward and it is less than or equal to the coefficient of determination.
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