QNT 275 WEEK 4 QUIZ
QNT 275
week 4 quiz
Consider
the following simple linear regression model: The response variable
is:
β0
y
x
ε
The
standard error of the estimate measures:
the variability of the values of the
sample regression coefficients.
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 explanatory variables.
Consider the following simple linear
regression model: β0 and β1 are:
the
explanatory variables.
the
random error terms.
the
response variables.
the
unknown parameters.
Another name for an explanatory variable is
the ___.
dependent
variable
independent
variable
inferred
variable
descriptive
variable
For a given set of explanatory variables in
general:
the
width of a confidence interval is the same as the width of a prediction
interval.
a
confidence interval is wider than a prediction interval.
a
confidence interval is narrower than a prediction interval.
The
width of a confidence interval cannot be determined.
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?
Infinity
+1
0
-1
What is the name of the variable that’s used
to predict another variable?
Explanatory
Standard
Error of the Estimate
Coefficient
of Determination
Response
Serial correlation is typically observed in:
cross-sectional
data.
time
series data.
sparse
data.
outliers.
Which of the following violates the
assumptions of regression analysis?
The
error term is correlated with an explanatory variable.
The
error term has a zero mean.
The
error term is normally distributed.
The
error term has a constant variance.
Which of the following variables is not
qualitative?
Gender
of a person
Student’s
status (freshman, sophomore, etc.)
Religious
affiliation
Number
of dependents claimed on a tax return
QNT 275
WEEK 4 QUIZ
QNT 275 week 4 quiz
Consider the following simple linear
regression model: The response variable is:
β0
y
x
ε
The standard error of the estimate measures:
the
variability of the values of the sample regression coefficients.
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 explanatory variables.
Consider the following simple linear
regression model: β0 and β1 are:
the
explanatory variables.
the
random error terms.
the
response variables.
the
unknown parameters.
QNT 275
WEEK 4 QUIZ
Another name for an explanatory variable is
the ___.
dependent
variable
independent
variable
inferred
variable
descriptive
variable
For a given set of explanatory variables in
general:
the
width of a confidence interval is the same as the width of a prediction
interval.
a
confidence interval is wider than a prediction interval.
a
confidence interval is narrower than a prediction interval.
The
width of a confidence interval cannot be determined.
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?
Infinity
+1
0
-1
QNT 275
WEEK 4 QUIZ
What is the name of the variable that’s used
to predict another variable?
Explanatory
Standard
Error of the Estimate
Coefficient
of Determination
Response
Serial correlation is typically observed in:
cross-sectional
data.
time
series data.
sparse
data.
outliers.
Which of the following violates the
assumptions of regression analysis?
The
error term is correlated with an explanatory variable.
The
error term has a zero mean.
The
error term is normally distributed.
The
error term has a constant variance.
QNT 275
WEEK 4 QUIZ
Which of the following variables is not
qualitative?
Gender
of a person
Student’s
status (freshman, sophomore, etc.)
Religious
affiliation
Number
of dependents claimed on a tax return
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