STRAIGHTERLINE BUSINESS STATS FINAL EXAM LATEST 2026
UPDATED QUESTIONS AND VERIFIED 100% SOLUTIONS
(2026/2027) |A+ GRADED |GUARANTEED PASS
In multiple regression analysis, residual analysis is used to test the requirement that
___________. - Answers -The variation in the residuals is the same for all predicted values of Y
A valid multiple regression analysis assumes or requires that _________________. - Answers -
The independent variables and the dependent variable have a linear relationship
To evaluate the assumption of linearity, a multiple regression analysis should include
___________. - Answers -Scatter diagrams of the dependent variable plotted as a function of
each independent variable
All other things being held constant, what is the change in the dependent variable for a unit
change in X1 for the multiple regression equation: Ŷ = 5.2 + 6.3X1 - 7.1 X2? - Answers -+6.3
A researcher is studying the relationship between 10 different variables and a critical measure
of business performance. What method can be used to select the best set of variables to predict
performance? - Answers -Stepwise regression
What does the correlation matrix for a multiple regression analysis contain? - Answers -Simple
correlation coefficients
1|Page
,The best example of an alternate hypothesis for a global test of a multiple regression model is
______________. - Answers -H1: Not all the β's are equal to 0
The following correlations were computed as part of a multiple regression analysis that used
education, job, and age to predict income.
What is this table called? - Answers -Correlation matrix
The best example of a null hypothesis for testing an individual regression coefficient is
__________. - Answers -H0: β1 = 0
In an ANOVA table, for a multiple regression analysis, the variation of the dependent variable
explained by the variation of the independent variables is represented by ___________. -
Answers -The regression sum of squares
A frequency distribution has a mean of 200 and a standard deviation of 20. The class limits for
one class are 220 up to 240. What are the standard normal z-statistics for the class limits? -
Answers -1.0 and 2.0
What is our decision for a goodness-of-fit test with a computed chi-square value of 1.273 and a
critical value of 13.388? - Answers -Do not reject the null hypothesis.
2|Page
,A survey of property owners' opinions about a street-widening project was taken to determine
if owners' opinions were related to the distance between their home and the street. A randomly
selected sample of 100 property owners was contacted and the results are shown next.
What is the expected frequency for people against the project and who have over 120 feet of
property foot-frontage? - Answers -3.9
A sample of 100 production workers is obtained. The workers are classified by gender (male,
female) and by age (under 20, 20-29, 30-39, and 40 or over). How many degrees of freedom are
there? - Answers -3
Using a graphical method to determine if a set of ungrouped raw data is normally distributed,
the data would be normally distributed if ____________. - Answers -The plot of the data was
linear
A recent study of the relationship between social activity and education for a sample of
corporate executives showed the following results.
The null hypothesis for the analysis is __________________________. - Answers -There is no
relationship between social activity and education.
To determine if a set of ungrouped raw data is normally distributed, the null hypothesis is
________________. - Answers -The data are normally distributed
3|Page
, A survey of property owners' opinions about a street-widening project was taken to determine
if owners' opinions were related to the distance between their home and the street. A randomly
selected sample of 100 property owners was contacted and the results are shown next.
What is the critical value at the 10% level of significance? - Answers -7.779
A recent study of the relationship between social activity and education for a sample of
corporate executives showed the following results.
What is the value of the chi-square test statistic? - Answers -83.67
A recent study of the relationship between social activity and education for a sample of
corporate executives showed the following results.
Based on the analysis, what can be concluded? - Answers -Social activity and education are
related
The following table classifies 100 individuals using two variables, gender and college attended.
What is this two-way classification called? - Answers -Contingency table
Which chi-square distribution would be closest to a normal distribution? - Answers -The
distribution with 15 degrees of freedom.
4|Page
UPDATED QUESTIONS AND VERIFIED 100% SOLUTIONS
(2026/2027) |A+ GRADED |GUARANTEED PASS
In multiple regression analysis, residual analysis is used to test the requirement that
___________. - Answers -The variation in the residuals is the same for all predicted values of Y
A valid multiple regression analysis assumes or requires that _________________. - Answers -
The independent variables and the dependent variable have a linear relationship
To evaluate the assumption of linearity, a multiple regression analysis should include
___________. - Answers -Scatter diagrams of the dependent variable plotted as a function of
each independent variable
All other things being held constant, what is the change in the dependent variable for a unit
change in X1 for the multiple regression equation: Ŷ = 5.2 + 6.3X1 - 7.1 X2? - Answers -+6.3
A researcher is studying the relationship between 10 different variables and a critical measure
of business performance. What method can be used to select the best set of variables to predict
performance? - Answers -Stepwise regression
What does the correlation matrix for a multiple regression analysis contain? - Answers -Simple
correlation coefficients
1|Page
,The best example of an alternate hypothesis for a global test of a multiple regression model is
______________. - Answers -H1: Not all the β's are equal to 0
The following correlations were computed as part of a multiple regression analysis that used
education, job, and age to predict income.
What is this table called? - Answers -Correlation matrix
The best example of a null hypothesis for testing an individual regression coefficient is
__________. - Answers -H0: β1 = 0
In an ANOVA table, for a multiple regression analysis, the variation of the dependent variable
explained by the variation of the independent variables is represented by ___________. -
Answers -The regression sum of squares
A frequency distribution has a mean of 200 and a standard deviation of 20. The class limits for
one class are 220 up to 240. What are the standard normal z-statistics for the class limits? -
Answers -1.0 and 2.0
What is our decision for a goodness-of-fit test with a computed chi-square value of 1.273 and a
critical value of 13.388? - Answers -Do not reject the null hypothesis.
2|Page
,A survey of property owners' opinions about a street-widening project was taken to determine
if owners' opinions were related to the distance between their home and the street. A randomly
selected sample of 100 property owners was contacted and the results are shown next.
What is the expected frequency for people against the project and who have over 120 feet of
property foot-frontage? - Answers -3.9
A sample of 100 production workers is obtained. The workers are classified by gender (male,
female) and by age (under 20, 20-29, 30-39, and 40 or over). How many degrees of freedom are
there? - Answers -3
Using a graphical method to determine if a set of ungrouped raw data is normally distributed,
the data would be normally distributed if ____________. - Answers -The plot of the data was
linear
A recent study of the relationship between social activity and education for a sample of
corporate executives showed the following results.
The null hypothesis for the analysis is __________________________. - Answers -There is no
relationship between social activity and education.
To determine if a set of ungrouped raw data is normally distributed, the null hypothesis is
________________. - Answers -The data are normally distributed
3|Page
, A survey of property owners' opinions about a street-widening project was taken to determine
if owners' opinions were related to the distance between their home and the street. A randomly
selected sample of 100 property owners was contacted and the results are shown next.
What is the critical value at the 10% level of significance? - Answers -7.779
A recent study of the relationship between social activity and education for a sample of
corporate executives showed the following results.
What is the value of the chi-square test statistic? - Answers -83.67
A recent study of the relationship between social activity and education for a sample of
corporate executives showed the following results.
Based on the analysis, what can be concluded? - Answers -Social activity and education are
related
The following table classifies 100 individuals using two variables, gender and college attended.
What is this two-way classification called? - Answers -Contingency table
Which chi-square distribution would be closest to a normal distribution? - Answers -The
distribution with 15 degrees of freedom.
4|Page
