+
FOR A GIVEN SET OF EXPLANATORY VARIABLES, IN GENERAL:

FOR A GIVEN SET OF EXPLANATORY VARIABLES, IN GENERAL:

Rating:
Rating
(0)
Author: Christine Farr
Description:

http://theperfecthomework.com/for-a-given-set-of-explanatory-variables-in-general/

1 - For a given set of explanatory variables, in general: 
a confidence interval is narrower than a prediction interval.
a confidence interval is wider than a prediction interval.
The width of a confidence interval cannot be determined.
the width of a confidence interval is the same as the width of a prediction interval.
 
2- The standard error of the estimate measures:
the variability of the observed y-values around the predicted y-values.
the variability of the predicted y-values around the mean of the observed y-values.
the variability of the values of the sample regression coefficients.
the variability of the explanatory variables.
 
3- In a simple linear regression model, if the plots on a scatter diagram lie on a straight line, what is the standard error of the estimate?
+1
-1
Infinity
0
 
4- Which of the following variables is not qualitative?
Gender of a person
Religious affiliation
Student's status (freshman, sophomore, etc.)
Number of dependents claimed on a tax return
5- Consider the following simple linear regression model: The response variable is:
β0
x
y
ε
 
 
6- Another name for an explanatory variable is the ___.
descriptive variable
independent variable
inferred variable
dependent variable
 
7- Serial correlation is typically observed in:
outliers.
sparse data.
cross-sectional data.
time series data.
 
8- Consider the following simple linear regression model: β0 and β1 are:
the unknown parameters.
the random error terms.
the response variables.
the explanatory variables.
 
 
9 - What is the name of the variable that's used to predict another variable?
Coefficient of Determination 
Standard Error of the Estimate
Response
Explanatory
 
 
10- Which of the following violates the assumptions of regression analysis?
The error term has a constant variance.
The error term has a zero mean.
The error term is normally distributed.
The error term is correlated with an explanatory variable.

(more)
See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial