QMB 3200 Exam 3 Questions And Answers
A graph of the standardized residuals plotted against values of the
normal scores that helps to determine whether the assumption
that the error term has a normal probability distribution appears to
be valid is called a: -
correct answer ✅normal probability plot
The tests of significance in regression analysis are based on
assumptions about the error term ɛ . One such assumption is that
the variance of ɛ, denoted by 𝝈2, is: -
correct answer ✅the same for all values of x
identify independent and dependent variables between advertising
and sales -
correct answer ✅The independent variable is the advertising
expenses, and the dependent variable is sales.
In regression analysis, the variable that is being predicted is the: -
correct answer ✅dependent variable
The tests of significance in regression analysis are based on
assumptions about the error term ɛ. One such assumption is that
the error term follows ɛ a(n) _____ distribution for all values of x -
correct answer ✅normal
, QMB 3200 Exam 3 Questions And Answers
Influential observations always: -
correct answer ✅none of the above
When studying the relationship between two quantitative
variables, an interval estimate of the mean value of y for a given
value of x is called a(n): -
correct answer ✅confidence interval
When constructing a confidence or a prediction interval to quantify
the relationship between two quantitative variables, the
appropriate degrees of freedom are: -
correct answer ✅n-2
The value of the coefficient of correlation (r): -
correct answer ✅can be equal to the value of the coefficient of
determination (r2).
An F test, based on the F probability distribution, can be used to
test for: -
correct answer ✅significance in regression
A graph of the standardized residuals plotted against values of the
normal scores that helps to determine whether the assumption
that the error term has a normal probability distribution appears to
be valid is called a: -
correct answer ✅normal probability plot
The tests of significance in regression analysis are based on
assumptions about the error term ɛ . One such assumption is that
the variance of ɛ, denoted by 𝝈2, is: -
correct answer ✅the same for all values of x
identify independent and dependent variables between advertising
and sales -
correct answer ✅The independent variable is the advertising
expenses, and the dependent variable is sales.
In regression analysis, the variable that is being predicted is the: -
correct answer ✅dependent variable
The tests of significance in regression analysis are based on
assumptions about the error term ɛ. One such assumption is that
the error term follows ɛ a(n) _____ distribution for all values of x -
correct answer ✅normal
, QMB 3200 Exam 3 Questions And Answers
Influential observations always: -
correct answer ✅none of the above
When studying the relationship between two quantitative
variables, an interval estimate of the mean value of y for a given
value of x is called a(n): -
correct answer ✅confidence interval
When constructing a confidence or a prediction interval to quantify
the relationship between two quantitative variables, the
appropriate degrees of freedom are: -
correct answer ✅n-2
The value of the coefficient of correlation (r): -
correct answer ✅can be equal to the value of the coefficient of
determination (r2).
An F test, based on the F probability distribution, can be used to
test for: -
correct answer ✅significance in regression
