Basic Mathematics for College Students

7.2 Mean, Median, and Mode 617

Fill in the blanks.

1. The (average) of a set of values is the sum of
   the values divided by the number of values in the set.


2. The of a set of values written in increasing
   order is the middle value.


3. The of a set of values is the single value that
   occurs most often.


4. The mean, median, and mode are three measures of
   tendency.


5. Fill in the blank. The mean of a set of values is given
   by the formula


6. Consider the following set of values written in
   increasing order:
   36810111516
   a. Is there an even or an odd number of
   values?
   b. What is the middle number of the list?
   c. What is the median of the set of values?


7. Consider the following set of values written in
   increasing order:
   455689915
   a. Is there an even or odd number of
   values?
   b. What are the middle numbers of the
   set of values?
   c. Fill in the blanks:


8. Consider the following set of values:
   16861091026
   a. What value occurs the most often? How many
   times does it occur?
   b. What is the mode of the set of values?

Median 



2



2



Mean 

the sum of the values

CONCEPTS

VOCABULARY

Find the mean of each set of values.See Example 1.

9. 347781116


10. 13 15 17 17 15 13


11. 59123537456077


12. 00347912


13. 15712192717193520


14. 45 67 42 35 86 52 91 102


15. 4.2 3.6 7.1 5.9 8.2


16. 19.1 12.8 16.5 20.0

Find the median of each set of values.See Example 5.

17. 2951911172


18. 20432981


19. 754736741


20. 003400345


21. 15.1 44.9 19.7 13.6 17.2


22. 22.4 22.1 50.5 22.3 22.2

23.

24.

Find the median of each set of values.See Example 6.

25. 810166367


26. 72115417


27. 39150415147


28. 47 18 35 29 27 16


29. 1.8 1.7 2.0 9.0 2.1 2.3 2.1 2.0


30. 5.0 1.3 5.0 2.3 4.3 5.6 3.2 4.5

31.

32.

1

9

2

9

7

9

11

9

13

9

29

9

1

5

11

5

13

5

2

5

3

5

7

5

1

30

17

30

7

30

29

30

11

30

1

100

999

1,000

16

15

1

3

5

8

GUIDED PRACTICE

SECTION 7.2 STUDY SET