CHAPTER 10: REGRESSION ANALYSIS: ESTIMATING RELATIONSHIPS WITH ANSWERS RATED A+ WELL VERIFIED

CHAPTER 10: REGRESSION ANALYSIS: ESTIMATING
RELATIONSHIPS WITH ANSWERS RATED A+ WELL VERIFIED

CHAPTER 10: Regression Analysis: Estimating Relationships




MULTIPLE CHOICE


1) Data collected from approximately the same period of time from a cross-section of a
population are called:
a. time series data
b. linear data
c. cross-sectional data
d. historical data

ANS: C PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


2) Regression analysis asks:
a. if there are differences between distinct populations
b. if the sample is representative of the population
c. how a single variable depends on other relevant variables
d. how several variables depend on each other

ANS: C PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


3) In regression analysis, the variables used to help explain or predict the response variable are
called the
a. independent variables
b. dependent variables
c. regression variables
d. statistical variables

ANS: A PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis

, CHAPTER 10: REGRESSION ANALYSIS: ESTIMATING
RELATIONSHIPS WITH ANSWERS RATED A+ WELL VERIFIED

4) In regression analysis, the variable we are trying to explain or predict is called the
a. independent variable
b. dependent variable
c. regression variable
d. statistical variable
e. residual variable

ANS: B PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


5) In regression analysis, if there are several explanatory variables, it is called:
a. simple regression
b. multiple regression
c. compound regression
d. composite regression

ANS: B PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


6) In regression analysis, which of the following causal relationships are possible?
a. X causes Y to vary
b. Y causes X to vary
c. Other variables cause both X and Y to vary
d. All of these options

ANS: D PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis

, CHAPTER 10: REGRESSION ANALYSIS: ESTIMATING
RELATIONSHIPS WITH ANSWERS RATED A+ WELL VERIFIED

7) is/are especially helpful in identifying outliers.
a. Linear regression
b. Regression analysis
c. Normal curves
d. Scatterplots
e. Multiple regression

ANS: D PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


8) Outliers are observations that
a. lie outside the sample
b. render the study useless
c. lie outside the typical pattern of points on a scatterplot
d. disrupt the entire linear trend

ANS: C PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


9) A “fan” shape in a scatterplot indicates:
a. unequal variance
b. a nonlinear relationship
c. the absence of outliers
d. sampling error

ANS: A PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


10) A scatterplot that appears as a shapeless mass of data points indicates:
a. a curved relationship among the variables
b. a linear relationship among the variables
c. a nonlinear relationship among the variables
d. no relationship among the variables

ANS: D PTS: 1 MSC: AACSB: Analytic | AACSB: Regression

, CHAPTER 10: REGRESSION ANALYSIS: ESTIMATING
RELATIONSHIPS WITH ANSWERS RATED A+ WELL VERIFIED

Analysis


11) Correlation is a summary measure that indicates:
a. a curved relationship among the variables
b. the rate of change in Y for a one unit change in X
c. the strength of the linear relationship between pairs of variables
d. the magnitude of difference between two variables

ANS: C PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


12) A correlation value of zero indicates.
a. a strong linear relationship
b. a weak linear relationship
c. no linear relationship
d. a perfect linear relationship

ANS: C PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis


13) The correlation value ranges from
a. 0 to +1
b. –1 to +1
c. –2 to +2
d. –¥ to+ ¥

ANS: B PTS: 1 MSC: AACSB: Analytic | AACSB: Regression
Analysis