Question

which of the following choices is the standard deviation of sample shown here? 17,18,19,20,21 A,19 B,2 C,2.2 D, ^2 E,^2.5

Answer 1

It is sample sd and so, division is by 4. The answer is D

Answer 2

Do you mean
\[D, \sqrt 2\ \ E, \sqrt{2.5})\]

Answer 3

yea im pretty sure thats what they meant. its the only thing that makes sense.

Answer 4

YEA HOW DO YOU DO THAT ???

Answer 5

BTW, division by 4 does not give D.

Answer 6

IT WOULD BE E^2.5

Answer 7

You would type \ [\ s q r t 2\ ]
but skip the spaces after the first and last \

Answer 8

i meant E. sorry

Answer 9

or better, go to the latex practising forum at openstudy.

Answer 10

\[ \sqrt{\frac{1^2+2^2+2^2+1^2}{4}}=\sqrt{5/2}=\sqrt{2.5}\]

Answer 11

THANKS

Answer 12

You're welcome! :)