Measures of Central Tendency and Dispersion of Grouped Data

If you score 76, 85, 97, and 83 on your math tests, what would your median score be?

• 84

• 90

• 85.25

• 88

The cost of four cell phones are $345, $400, $110, and $640.

What is the median cost?

• $330

• $390

• $372.50

• $375

What is the mode of the following data set?

5, 7, 7, 8, 12 , 12, 5, 6, 13, 12

• 5

• 7 and 5

• 12

• no mode

The scores awarded to 25 students for an assignment were as follows:

4, 7, 5, 9, 8, 6, 7, 7, 8, 5, 6, 9, 8,

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

What is the mode?

• 6

• 7

• 8

• 9

Which number is not the mean, median, mode, or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?

• 3

• 7

• 12

• 11

The weights (in pounds) of ten pumpkins are 22, 21, 24, 24, 5, 24, 5, 23, 24, and 24. What is the mean of the pumpkin weights?

(a)  

The weights (in pounds) of ten pumpkins are 22, 21, 24, 24, 5, 24, 5, 23, 24, and 24.

What is the mode of the pumpkin weights?

(a)  

The weights (in pounds) of ten pumpkins are 22, 21, 24, 24, 5, 24, 5, 23, 24, and 24.

What is the median of the pumpkin weights?

(a)  

The heights of some students are given.

158cm 172cm 164cm

164cm 167cm 159cm

What is the range of the heights?

• 13cm

• 14cm

• 164cm

• 330cm

Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have. 1, 0, 1, 5, 0, 3, 4. What is the average number of cavities?

• 14

• 2

• 7

• 0