math ,correction

posted by .

is this right?

Find the standard deviation to the given data. The manager of a small dry cleaner employs six people. As part of their personnel file, she asked each one to record to the nearest one-tenth of a mile the distance they travel one way from home to work. THe six distances are listed:
17.5,12.5,26.0,32.2,17.7,20.1. Round the result to two decimal places.

so the mean that i got was 21
then I found the square of the number within the list and added the results then i used the formula to find variance.

= (2892.64- 6 (21)^2)/ (6-1)
= i am ended up after calculations with
49.328

then i find the deviation squaring the answer.

sqrt 49.328 approx.= 7.023 and rounding to the two decimal places would be: 7.03 that would be my standard deviation

You found the sample n-1 deviation correctly, however, how did you round a 3 up?

to round up a 3 it should be next to it a 5 or above so...

7.023 rounded to two decimal places would look like 702.3 which would be 702.0 then or am i still wrong...

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Albebra II

    Find the standard deviation of the data set to the nearest tenth: (21, 13, 18, 16, 13, 35, 12, 8, 15) Answer: 16.8 thanks
  2. 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
  3. 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
  4. 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 …
  5. 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
  6. 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
  7. 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
  8. Algebra 2

    Please show your work to find the mean and standard deviation of the data. Round to the nearest tenth. 20, 16, 18, 14, 9, 20, 16 I know i have to add all them and divide the answer by 7. And that's my mean , But Idk how to get the …
  9. Algebra

    Use a calculator to find the mean and standard deviation of the data. Round to the nearest tenth. 6,7,19,7,18,7 A. mean = 9; standard deviation = 26.4 B. mean = 11.9; standard deviation = 26.4 C. mean = 10.6; standard deviation = 6.1 …
  10. Math

    What is the standard deviation of the following data set rounded to the nearest tenth?

More Similar Questions