MathAnswer included
posted by Anonymous .
{9, 7, 13, 24, 32, 45, 47}
First you have to find the mean
The mean is
9+7+13+24+32+45+47=177/7=25.2857=25.29
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data.
{9, 7, 13, 24, 32, 45, 47}
(25.299)^2=16.29^2=265.36
(25.297)^2=18.29^2=334.52
(25.2913)^2=12.29^2=151.04
(25.2924)^2=1.29^2=1.66
(25.2945)^2= 19.71^2=388.48
(25.2947)^2= 21.41^2=458.39
1599.45
Sqrt 39.99
My answer isn't matching the possible choices

your mean is correct.
(25.299)^2=16.29^2=265.36
(25.297)^2=18.29^2=334.52
(25.2913)^2=12.29^2=151.04
(25.2924)^2=1.29^2=1.66
(25.2945)^2= 19.71^2=388.48
(25.2947)^2= 21.41^2=458.39
Your second moment about the mean is correct.
Now, standard deviation. I would divide that sum by n=7 (or in real life, n1) then take the square root.
I get about 16
http://hubpages.com/hub/deviation
Respond to this Question
Similar Questions

math
find the standard deviation for the given data. Round your answer to one more decimal place than original data. (9,7,13,24,32,45,47) I get 16.62041 but how do I round my answer to one or more decimal places? 
math
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 10) {15, 13, 31, 42, 58, 78} A) 36.5 B) 534.3 C) 39.5 D) 23.1 
math
Find the standard deviation for the data. Round your answer to one more decimal place than the original data. {15,13,31,42,58,78} 
math
Find the standard deviation for the given data. Round your answer to one more decimal place than original data. 2,5,47,11,13,48,39,36 
math
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. {2,5,47,11,13,48,39,36} A). 18 B). 324.9 C).25.1 D). 24.5 I got 19.3 but it is not one of the multiple choices, am … 
Math
Find the standard deviation for the given data. Round your answer to one or more decimal places than the original data. 3){15,13,31,42,58,78} A)534.3 B)23.1 C)36.5 D)39.5 
Math
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 2, 5, 47, 11, 13, 48, 39, 36 
math
Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f. Round the variance and standard deviation to one decimal place. a. Mean b. Range c. Variance d. Standard deviation … 
Math
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 15, 42, 53, 7, 9, 12, 14, 28, 47 A. 29.1 B. 16.6 C. 17.8 D. 15.8 is it C 
Please help me with this Q
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 22, 29, 21, 24, 27, 28, 25, 36 A. 4.8 B. 4.2 C. 2.8 D. 1.6