Essentials of Statistics for Business and
Economics 6th Edition By David R. Anderson
– Test Bank
Sample Test
CHAPTER 3—DESCRIPTIVE STATISTICS: NUMERICAL MEASURES
MULTIPLE CHOICE
1. The measure of location which is the most likely to be
influenced by extreme values in the data set is the
a. range
b. median
c. mode
d. mean
,ANS: D PTS: 1 TOP: Descriptive Statistics
2. The most important statistical descriptive measure of the
location of a data set is the
a. mean
b. median
c. mode
d. variance
ANS: A PTS: 1 TOP: Descriptive Statistics
3. If two groups of numbers have the same mean, then
a. their standard deviations must also be equal
b. their medians must also be equal
c. their modes must also be equal
d. None of these alternatives is correct.
ANS: D PTS: 1 TOP: Descriptive Statistics
4. The mean of the sample
,a. is always smaller than the mean of the population from which the samp
was taken
b. can never be zero
c. can never be negative
d. None of these alternatives is correct.
ANS: D PTS: 1 TOP: Descriptive Statistics
5. When the smallest and largest percentage of items are
removed from a data set and the mean is computed, the
mean of the remaining data is
a. the median
b. the mode
c. the trimmed mean
d. any of the above
ANS: C PTS: 1 TOP: Descriptive Statistics
6. Since the population is always larger than the sample, the
value of the sample mean
a. is always smaller than the true value of the population mean
b. is always larger than the true value of the population mean
c. is always equal to the true value of the population mean
, d. could be larger, equal to, or smaller than the true value of the
population mean
ANS: D PTS: 1 TOP: Descriptive Statistics
7. Which of the following provides a measure of central
location for the data?
a. standard deviation
b. mean
c. variance
d. range
ANS: B PTS: 1 TOP: Descriptive Statistics
8. When computing the mean of a set of values xi, the value of åxi
a. can never be zero
b. can never be negative
c. must always be positive
d. can be any value
ANS: D PTS: 1 TOP: Descriptive Statistics
Economics 6th Edition By David R. Anderson
– Test Bank
Sample Test
CHAPTER 3—DESCRIPTIVE STATISTICS: NUMERICAL MEASURES
MULTIPLE CHOICE
1. The measure of location which is the most likely to be
influenced by extreme values in the data set is the
a. range
b. median
c. mode
d. mean
,ANS: D PTS: 1 TOP: Descriptive Statistics
2. The most important statistical descriptive measure of the
location of a data set is the
a. mean
b. median
c. mode
d. variance
ANS: A PTS: 1 TOP: Descriptive Statistics
3. If two groups of numbers have the same mean, then
a. their standard deviations must also be equal
b. their medians must also be equal
c. their modes must also be equal
d. None of these alternatives is correct.
ANS: D PTS: 1 TOP: Descriptive Statistics
4. The mean of the sample
,a. is always smaller than the mean of the population from which the samp
was taken
b. can never be zero
c. can never be negative
d. None of these alternatives is correct.
ANS: D PTS: 1 TOP: Descriptive Statistics
5. When the smallest and largest percentage of items are
removed from a data set and the mean is computed, the
mean of the remaining data is
a. the median
b. the mode
c. the trimmed mean
d. any of the above
ANS: C PTS: 1 TOP: Descriptive Statistics
6. Since the population is always larger than the sample, the
value of the sample mean
a. is always smaller than the true value of the population mean
b. is always larger than the true value of the population mean
c. is always equal to the true value of the population mean
, d. could be larger, equal to, or smaller than the true value of the
population mean
ANS: D PTS: 1 TOP: Descriptive Statistics
7. Which of the following provides a measure of central
location for the data?
a. standard deviation
b. mean
c. variance
d. range
ANS: B PTS: 1 TOP: Descriptive Statistics
8. When computing the mean of a set of values xi, the value of åxi
a. can never be zero
b. can never be negative
c. must always be positive
d. can be any value
ANS: D PTS: 1 TOP: Descriptive Statistics
