Question

What is the standard deviation of the data set given below?

4, 7, 8, 9, 12

A. 6.8
B. Rad 6.8
C. Rad 8.5
D. Rad 2.5
E. 2.5
F. 8.5

Answer 1

@lizz123

Answer 2

@Michele_Laino

Answer 3

please youhave to find the mean value first

Answer 4

http://www.mathsisfun.com/data/standard-deviation.html

Answer 5

add 3+7+8+9+12

Answer 6

then divide it by 5

Answer 7

@apexhelpp try please!

Answer 8

22.2

Answer 9

nope. 3+7=10+8=18+9=27+12=39

39/5=7.8

Answer 10

wait that isnt the answer right?

Answer 11

ik

Answer 12

then what do we do

Answer 13

@Michele_Laino

Answer 14

my answer was 8.414 so would 8.5 be the answer?

Answer 15

Sorry I got mean=8