Question

Find the standard deviation. Round to one more place than the data. 6, 5, 9, 13, 18, 7, 5, 20, 11, 15
A. 5.4
B. 1.2
C. 4.9
D. 5.1

Answer 1

first find the mean
\[\large x=\frac{6+5+9+13+18+7+5+20+11+15}{10}=10.9\]

now for standard deviation
\[\Large \sigma=\sqrt{\frac{1}{n}\Sigma _{j=1}^{n}(xj-x)^2}\]

Answer 2

so using the above values can you find the standard deviation now ?

Answer 3

standard deviation ?

Answer 4

yes

Answer 5

what is standard deviation

Answer 6

\[\Large \sigma=5.1\]

D

Answer 7

@85295james

Answer 8

yes

Answer 9

did you get it?

Answer 10

no but i am thinking

Answer 11

ok let me explain in detail

Answer 12

thank you

Answer 13

are you okay with the mean ? 10.9 ?

Answer 14

yes

Answer 15

6+ 5+ 9+ 13+18+ 7+ 5+ 20+ 11+ 15 /10=10.9

Answer 16

ok

Answer 17

but what do i do with 5.1

Answer 18

i don't understand

Answer 19

i am going to find the standard deviation

Answer 20

did you get it now?

Answer 21

1.2

Answer 22

O 5.16

Answer 23

it is D

Answer 24

:D

Answer 25

thank you