2 statistics -standard deviation may 20
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Deviation
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Using the data from the grade 10 test
12, 14, 4.5, 16, 22, 20, 11, 22, 19, 17
Calculate the mean: 15.75
You need a chart 3 Columns
11 Rows
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x x x x x( )2
12144.516222011221917
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x x x x x( )2
12144.516222011221917
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Difference between each score, and the mean
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Determine the square of each of the differences
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Determine the sum of the squares
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Divide the sum of the squares by n1
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The standard deviation is the square root of this number.
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Standard Deviation Formula
Standard Deviation
** You don't have to remember this formula, just know how to calculate.**
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Assignment Page V-F-14
Questions: 1 - 6
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