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Find the sample variance and standard deviation : 7 11 23 28 29 30 31 38 51 55

Homework: Section 3.2 Save Score: 0.5 of 1 pt 2 of 9 (2 complete) HW Score: 16.67%, 1.5 of 9 pts 3.2.9 Question Help Find the sample variance and standard deviation 7, 55, 11, 51,38, 23,29, 31, 30, 28 Choose the correct answer below. Fill in the answer box to complete your choice. Round to two decimal places as needed.) B. S2-23230] X Sorry, thats not correct. Sorry. your answer is not correct. Correct answer. B 230.46 Your answer: B: 232.30 OK

Here is what I keep getting:

14.3 니 og .7 ら,0235.3 ko аза .30 10-1

What am I doing wrong?

math   Statistics-And-Probability   
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Answer #1

y, 11, 25, 28, 29, 3o, 31, 38, s i, s 5 1 234 2 8 29+ 30 +31 3851+S 5 30. 3 (29-50-5) + (3c-50.3) +(51-3o5) + (38-563) = 2074 .1 - 2074.1-250.4555ς ~ 230.46 J230, 115 5 5 ç ご 15.1807~ 15.1B

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