21 the army wants to describe the distribution of head sizes of its soldiers in order to plan
orders of helmets, here are the head sizes in inches of 30 male soldiers, which were obtained
w putting a tape measure around each soldier's forehead,
23.0 22.2 21.7 22.0 22.3 22.6
22.7 21.5 22.7 24.9 20.8 28.3
24.2 28.5 23.9 23.4 20.8 21.5
23.0 24.0 22.7 22.6 23.9 21.8
23.1 24.9 21.0 22.4 23.5 22.5

8. give a graphical description of these data is there any aspect of the distribution that would
discourage the use of x and s to measure center and spread?
fox and for these data be sure to include the units in which these numbers
are measured
6. what percentage of the data is within one standard deviation of the mean?

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

What are the coordinates of the point is 1/4 of the way from a (-6, -3) to b (6, 1)? a. (-3, -2) b. (0, -2) c. (-1, 0) d. (3, 2)

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.