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March 27, 2015

March 27, 2015

Posted by **Anonymous** on Sunday, December 2, 2012 at 8:46pm.

94 177 127 94 75 94 116 100 85

(a) Use a calculator with mean and sample standard deviation keys to find the sample mean startup cost x and sample standard deviation s. (Round your answers to one decimal place.)

x = thousand dollars

s = thousand dollars

- statistics -
**PsyDAG**, Tuesday, December 4, 2012 at 1:15pmI don't have a calculator with those keys, but here is what you can do.

Find the mean first = sum of scores/number of scores

Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

Standard deviation = square root of variance

I'll let you do the calculations.

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