1.  The number of snowboarding accidents reported weekly during one winter season at the Fun Mountain Resort:      12, 15, 6, 8, 12, 17, 10, 8, 7, 13, 14, 16, 8, 18, 11
(a) Find the mean.
 Choose: 11.7 12 12.7 12.8

(b)
Find the median.

 Choose: 11 12 13 14

(c)
Find the mode.

 Choose: 8 11 12 no mode

(d)
A teenager wants to emphasize the safety of snowboarding. Which measure of central tendency should the teen use?

 Choose: mean median mode

(e)
A parent wants to emphasize the dangers of snowboarding. Which measure of central tendency should the parent use?

 Choose: mean median mode

2.  A company is releasing two new types of knee socks: argyle and plaid. The table below shows the sales numbers for the first week.
 Day of Week Mon Tues Wed Thurs Fri Sat Sun Argyle 8 10 1 10 2 10 1 Plaid 14 6 8 6 18 12 6

(a)
Find the mean, median and mode of the
argyle knee socks sales.
 Choose: 6, 8, 10 10, 8, 6 8, 6, 10 10, 6, 8

(b)
Find the mean, median and mode of the
plaid knee socks sales.
 Choose: 6, 8, 10 10, 8, 6 8, 10, 6 10, 6, 8

(c)
Which measure of central tendency would you use to show that the
argyle knee socks are selling better?
 Choose: mean median mode

(d)
Which measure of central tendency would you use to show that the
plaid knee socks are selling better?
 Choose: mean median mode

(e)
Which measure of central tendency would you use to show that there is no difference between the sales of the two types of knee socks?

 Choose: mean median mode

(f)

 Choose: argyle plaid both were the same

3.  The box plot shown at the right is described as being a ____________.
Choose:
 symmetric distribution skewed left distribution skewed right distribution

4.  Compare mean and median in differently shaped data distributions. For each type of distribution stated below, decide what is "typically" the relationship between the mean and the median.
Type of distribution:
 mean larger median larger mean = median
symmetric, bell-shaped distribution
distribution skewed right
distribution skewed left
uniform distribution

5.  The best measure of center to use when data is skewed is the ____________.
Choose:
 mean median mode

6.  Which of the following statements is false?
Choose:
 In a skewed distribution, the mean typically gets pulled toward the tail. The graph of a distribution with one clear peak is called a unimodal distribution. The graph clearly showing the median value is the box plot. The median can also be thought of as a balance point.