Complete the standard deviation of the following set of data to the nearest whole number: 8, 12, 15, 17, 18

4

Step-by-step explanation:

1. Find the Mean

(8+12+15+17+18)/5=14

2.For each number, subtract the Mean and square the result.

(8-14)^2=36

(12-14)^2=4

(15-14)^2=1

(17-14)^2=9

(18-14)^2=16

3. Find the Mean of those squared differences.

(36+4+1+9+16)/5=13.2

4.Take the square root of that and this is what you want.

square root of 12.7 = 3.6 (round up to 4)

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.