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)