Question

QUESTION 6 What is the mean of the following set of data? Round your answer to two decimal places. 78, 82, 91, 100, 78, 92, 82, 77, 80
a. 91.21
b. 86.75
c. 84.44
d. 75.23

QUESTION 7

Find the median of the following set of data.
13, 11, 4, 5, 6, 9, 10, 12, 15, 16



a. no median


b. 10


c. 9


d. 10.5

Answer 1

Mean is the average number. To find mean, add all the numbers and divide by how many numbers there are.

$78 + 82 + 91 + 100 + 78 + 92 + 82 + 77 + 80 = 760$

There are 9 numbers. Divide by 9

$760 \div 9 = 84.44$

Question 6 ⇒ C. 84.44

Median is the middle number when ordered from least to greatest. First order the numbers.

$4, 5, 6, 9, 10, 11, 12, 13, 15, 16$

The 2 middle numbers are 10 and 11. Add them together and divide by 2

$10 + 11 = 21 \\ 21 \div 2 = 10.5$

Question 7 ⇒ D. 10.5

Answer 2

C and D are the answers for 6 and 7. hope this helps:)