Using measures of central tendency:

5. Write and solve an equation to find the value of "x". 3.8, 4.2, 5.3, x; mean 112

7. Write and solve an equation to find the value of "x". 100, 121, 105, 113, 108, x; mean 112

9. Find the range. 12, 15, 17, 28, 30

11. Find the range. - 12, - 15, 5, 3, - 2, 0, - 7

13. For each list of data, find the range and the mean. Use the range to compare the spread of the data.

List 1: 64, 43, 55, 28, 71. List 2: 48, 53, 61, 47, 51

Question

Jax Farmer

Mathematics

13 January, 16:09

Using measures of central tendency:

5. Write and solve an equation to find the value of "x". 3.8, 4.2, 5.3, x; mean 112

7. Write and solve an equation to find the value of "x". 100, 121, 105, 113, 108, x; mean 112

9. Find the range. 12, 15, 17, 28, 30

11. Find the range. - 12, - 15, 5, 3, - 2, 0, - 7

13. For each list of data, find the range and the mean. Use the range to compare the spread of the data.

List 1: 64, 43, 55, 28, 71. List 2: 48, 53, 61, 47, 51

+3

Answers (1)

Know the Answer?

Mariah Yang · Answer 1

Step-by-step explanation:

5)

Mean, 112 = (3.8+4.2.5.3+x) / 4

448 = 13.3 + x

x = 448-13.3=434.7

7)

Mean, 112 = (100 + 121 + 105 + 113+108 + x) / 5

560 = 547 + x

x = 560-547=13

9) 12, 15, 17, 28, 30

Range = highest - lowest = 30-12

=18

11) - 12, - 15, 5, 3, - 2, 0, - 7

Range = highest - lowest = 5--15

=20

64, 43, 55, 28, 71

Mean = (64+43+55 + 28 + 71) / 5

=52.2

Range = 71-28=43

8, 53, 61, 47, 51

Mean = (8+53+61 + 47 + 51) / 5

=220/5 = 44

Range = 61-8=53

Spread = 53-43=10