Measures of Central Tendency Test Review

A tally was made of the number of times each color of crayon was used by a kindergarten class. Which measure of central tendency should the teacher use to determine which color is the favorite color of her class?

• mean

• median

• mode

• range

In January of 2018, Mrs. Harris' son moved to a tropical climate. For the year that followed, he recorded the number of rainy days that occurred each month. His data contained 14, 14, 10, 12, 11, 13, 11, 11, 14, 10, 13, 8.

Find the mean, mode, median and range for his data set of rainy days.

• mean = 11.75, median = 11.5, mode = 14

• mean = 11.75, median = 11, mode = 14

• mean = 12, median = 11.5, mode = 11 and 14

• mean = 11.75, median = 11.5, mode = 11 and 14

How many classrooms have between 27 and 32 students?

• 11

• 9

• 7

• 4

How many more classrooms have 29 students than 26 students?

• 1

• 3

• 4

• 11

What is the greatest number of students in a classroom?

• 29

• 30

• 31

• 33

Look at the line plot and describe the shape of the data distribution.

• The data distribution is symmetrically distributed

• The data distribution is skewed to the right

• The data distribution is skewed to the left

• The data distribution is uniform

The PE teachers at PMMS have decided to monitor the fitness levels of various students. They randomly selected twenty-two students and recorded the number of chin ups they could successfully complete. The data is listed below.

3, 4, 5, 6, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10

If plotted, what description would best identify the appearance of the data distribution?

• The data distribution is symmetrically distributed

• The data distribution is skewed to the right

• The data distribution is skewed to the left

• The data distribution is uniform

A set of 7 numbers is arranged in a list from lowest to highest value. Which measure BEST describes the fourth number in the list?

• mean

• median

• mode

• range

A student will ask his classmates one survey question. Which of the following is a statistical question that would result in variability of answers?

• What is the total number of legs on a horse?

• What is the total number of books a sixth grader has checked out of the media center?

• What is the total number of sides on a pentagon?

• What is the number of inches in a yard?

A student will ask his classmates one survey question. Which of the following is a statistical question that would result in variability of answers?

• Will you eat lunch in the cafeteria today?

• How many texts do you send in a week?

• What is the total number of basketball goals in the gym?

• Are students allowed to run in the hall?