1. For which scale(s) of measurement can the mean be an appropriate measure of central tendency? Select all that apply.
   1. Nominal
   2. Ordinal
   3. Interval
   4. Ratio

1. For which scale(s) of measurement can the median be an appropriate measure of central tendency? Select all that apply.
   1. Nominal
   2. Ordinal
   3. Interval
   4. Ratio

1. For which scale(s) of measurement can the mode be an appropriate measure of central tendency? Select all that apply.
   1. Nominal
   2. Ordinal
   3. Interval
   4. Ratio
2. A group of 8 students gets the following scores on a spelling test: 3, 4, 5, 5, 5, 6, 6, 7, 7, 8. What is the mean of these scores? What is the standard deviation?

1. Which measure of central tendency is most affected by extreme scores?

1. The following is a frequency distribution of the number of the school papers sold over the last 10 days.

Papers Sold	Frequency	Relative frequency
18	2	.11
19	3	.17
20	4	.22
21	2	.11
22	2	.11
23	4	.22
24	0	.00
25	1	.06

Find the mean, the median and the mode of the papers sold.

1. A distribution is negatively skewed. Which is the most probable order for the three measures of central tendency?
   1. Mean = 40, median = 50, mode = 60
   2. Mean = 60, median = 50, mode = 40
   3. Mean = 40, median = 40, mode = 40

The following is a boxplot represents the 5k finish times (in minutes) for 50 runners. Use this boxplot to answer the following 3 questions.