RES 341 Lab test 1-2

RES 341 Lab test 1-2 - decimal places. the mean is...

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The tourist bureau of the Caribbean Islands surveyed a sample of 6 United States tourists as they left to return home. The tourists were asked how many days they spent on their visits. Their responses were as follows: 9, 7, 12, 4, 8, 8. Find the standard deviation of this sample of numbers. Round your answer to at least two
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Unformatted text preview: decimal places. the mean is (4+7+8+8+9+12)/6=48/6=8 x x - mean (x – mean)² 4 4-8=-4 16 7-1 1 8 8 9 1 1 12 4 16 the sum of all the (x-mean)² is the standard deviation squared (σ²) thus σ²=16+1+0+0+1+16=34 thus σ= 34 =5.83...
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This document was uploaded on 05/10/2011.

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