1. What is the most commonly used measure of central tendency? a. mean b. median c. mode d. standard deviation

1. What is the most commonly used measure of central tendency?

a. mean

b. median

c. mode

d. standard deviation

2. It means the sum of all given values or terms in a distribution divided by the number of values or terms summed.

a. Quartile

b. mode

c. standard deviation

d. mean

3. What is the value of the median of the following raw scores? X= 3, 5, 5, 5, 6, 6, 7, 7, 7, 8, 10

a. 6

b. 6.22

c. 6.5

d. 5

4. What is the range of the scores in problem 3?

5. What is the value of the mode of the scores from problem 3?

a. 7

b. 6

c. 5

d. both a and c

6. What is the value of the mean of the scores in problem 3?

a. 6

b. 6.27

c. 6.5

d. 5

7. Which central tendency is most appropriate for the following set of data? (hint: these are scores on a quiz) X: 11, 12, 14, 15, 16, 16, 16, 17, 17, 19

a. Mode

b. You can’t tell due to the skewedness

c. Median

d. Mean

8. Find the 20th percentile for the data in problem 3.

9. Find the 25th percentile for the data in problem 7.

10. What is the value of the standard deviation of the following set of scores? X: 4, 10, 7, 6, 6, 9

a. 4.8

b. 2

c. 4

d. 2.19