2 years ago

What is the variance of the data set? 8, 9, 10, 16, 17

1 answer:

6 0

Mean = (8 + 9 + 10 + 16 + 17) / 5 = 60/5 = 12.

x - mean:

8 - 12 = -4, -4² = 16

9 - 12 = -3, -3² = 9

10 - 12 = -2, -2² = 4

16- 12 = 4, 4² = 16

17- 12 = -5, -5² = 25

Sum of the squares = 16 + 9 + 4 + 16 +25 = 70

Variance = 70/5 = 14

Variance = 14

You might be interested in

The area of David's living room is 18.087 square yards, and their bedroom has an area of 15.78 square yards.Round to the nearest

Darina [25.2K]

Q. The area of David's living room is 18.087 square yards, and their bedroom has an area of 15.78 square yards.Round to the nearest tenth and estimate the amount of carpet they need to buy. PLZ HELP!!

A. 33.867 and rounded is 33.9

7 0

2 years ago

11/3 can be thought of as a whole number and a fraction.

Nostrana [21]

11/3 = 3 2/3 as a mixed fraction or proprr fraction

6 0

2 years ago

What is half one added to three quarters

matrenka [14]

If you would like to know what is half one added to three quarters, you can calculate this using the following steps:

half one + three quarters = 1/2 + 3/4 = 2/4 + 3/4 = 5/4 = 1 1/4

The correct result would be five quarters (5/4).

6 0

3 years ago

100 POINTS AND BRAINLIEST!!!

frutty [35]

Hello!

I have all the work but I do not know how to post it on here.

The area of the figure shown is 57.

I hope it helps!

7 0

3 years ago

Read 2 more answers

You have a choice between 2 jobs, one pays $8.25/hr but requires you to spend $20 to get a uniform. The other pays $7.50/hr. At

Veronika [31]

Step-by-step explanation + Answer:

x = 1st job

y = 2nd job

x + y = 22......x = 22 - y

7x + 8.25y = 171.50

7(22 - y ) + 8.25y = 171.50

154 - 7y + 8.25y = 171.50

-7y + 8.25y = 171.50 - 154

1.25y = 17.50

y = 17.50 / 1.25

y = 14 <== 14 hrs at the 8.25 per hr job

x + y = 22

x + 14 = 22

x = 22 - 14

x = 8 <=== 8 hrs at the 7 per hr job

5 0

1 year ago