1. The average price for different brands of toothpaste could be visually displayed
in a(n)
A) correlation coefficient.
B) scatterplot.
C) standard deviation.
D) bar graph.
2. When you read a bar graph, it is most important for you to
A) mentally transform the data into a normal curve.
B) identify the value of the standard deviation.
C) note the range and size of the scale values.
D) remember that correlation facilitates prediction.
3. The most frequently occurring score in a distribution of scores is the
A) mode.
B) median.
C) standard deviation.
D) mean.
4. In a group of five individuals, two report annual incomes of $10,000, and the
other three report incomes of $14,000, $15,000, and $31,000, respectively. The
mode of this group's distribution of annual incomes is
A) $10,000.
,B) $15,000.
C) $16,000.
D) $31,000.
5. The mean of a distribution of scores is the
A) most frequently occurring score.
B) arithmetic average of all the scores.
C) least frequently occurring score.
D) score exceeded by 50 percent of all the scores.
6. Which measure of central tendency is used to calculate the average of your
school grades?
A) standard deviation
B) median
C) mean
D) mode
7. Mr. and Mrs. Klostreich have six children ages 5, 6, 6, 7, 8, and 16. The mean
age of the Klostreich children is
A) 5.
B) 6.
C) 7.
,D) 8.
8. The median of a distribution of scores is the
A) most frequently occurring score.
B) difference between the highest and lowest scores.
C) arithmetic average of all the scores.
D) middle score in a distribution of scores.
9. During the past year, Zara and Ivan each read 2 books, but George read 9, Ali
read 12, and Marsha read 25. The median number of books read by these
individuals was
A) 2.
B) 10.
C) 12.
D) 9.
10. Seven members of a boys' club reported the following individual earnings from
their sale of cookies: $2, $9, $8, $10, $4, $9, and $7. In this distribution of
individual earnings
A) the median is greater than the mean and greater than the mode.
B) the median is less than the mean and less than the mode.
C) the median is greater than the mean and less than the mode.
D) the median is less than the mean and greater than the mode.
, 11. Seven members of a Girl Scout troop report the following individual earnings
from their sale of candy: $4, $1, $7, $6, $8, $2, and $7. In this distribution of
individual earnings
A) the mean is less than the mode and equal to the median.
B) the mean is equal to the mode and greater than the median.
C) the mean is greater than the mode and greater than the median.
D) the mean is less than the mode and less than the median.
12. When an arithmetic average is reported in the news, it is most important for
readers to
A) determine whether it is statistically significant.
B) consider whether it is distorted by a few extreme cases.
C) be sure that it represents a standard deviation.
D) assume that it is the midpoint of a normal curve.
13. For which of the following distributions of scores would the median most clearly
be a more appropriate measure of central tendency than the mean?
A) 10, 22, 8, 9, 6
B) 12, 6, 8, 5, 4
C) 12, 15, 12, 9, 12
D) 23, 7, 3, 27, 16
in a(n)
A) correlation coefficient.
B) scatterplot.
C) standard deviation.
D) bar graph.
2. When you read a bar graph, it is most important for you to
A) mentally transform the data into a normal curve.
B) identify the value of the standard deviation.
C) note the range and size of the scale values.
D) remember that correlation facilitates prediction.
3. The most frequently occurring score in a distribution of scores is the
A) mode.
B) median.
C) standard deviation.
D) mean.
4. In a group of five individuals, two report annual incomes of $10,000, and the
other three report incomes of $14,000, $15,000, and $31,000, respectively. The
mode of this group's distribution of annual incomes is
A) $10,000.
,B) $15,000.
C) $16,000.
D) $31,000.
5. The mean of a distribution of scores is the
A) most frequently occurring score.
B) arithmetic average of all the scores.
C) least frequently occurring score.
D) score exceeded by 50 percent of all the scores.
6. Which measure of central tendency is used to calculate the average of your
school grades?
A) standard deviation
B) median
C) mean
D) mode
7. Mr. and Mrs. Klostreich have six children ages 5, 6, 6, 7, 8, and 16. The mean
age of the Klostreich children is
A) 5.
B) 6.
C) 7.
,D) 8.
8. The median of a distribution of scores is the
A) most frequently occurring score.
B) difference between the highest and lowest scores.
C) arithmetic average of all the scores.
D) middle score in a distribution of scores.
9. During the past year, Zara and Ivan each read 2 books, but George read 9, Ali
read 12, and Marsha read 25. The median number of books read by these
individuals was
A) 2.
B) 10.
C) 12.
D) 9.
10. Seven members of a boys' club reported the following individual earnings from
their sale of cookies: $2, $9, $8, $10, $4, $9, and $7. In this distribution of
individual earnings
A) the median is greater than the mean and greater than the mode.
B) the median is less than the mean and less than the mode.
C) the median is greater than the mean and less than the mode.
D) the median is less than the mean and greater than the mode.
, 11. Seven members of a Girl Scout troop report the following individual earnings
from their sale of candy: $4, $1, $7, $6, $8, $2, and $7. In this distribution of
individual earnings
A) the mean is less than the mode and equal to the median.
B) the mean is equal to the mode and greater than the median.
C) the mean is greater than the mode and greater than the median.
D) the mean is less than the mode and less than the median.
12. When an arithmetic average is reported in the news, it is most important for
readers to
A) determine whether it is statistically significant.
B) consider whether it is distorted by a few extreme cases.
C) be sure that it represents a standard deviation.
D) assume that it is the midpoint of a normal curve.
13. For which of the following distributions of scores would the median most clearly
be a more appropriate measure of central tendency than the mean?
A) 10, 22, 8, 9, 6
B) 12, 6, 8, 5, 4
C) 12, 15, 12, 9, 12
D) 23, 7, 3, 27, 16
