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Brief presentation on data spread using sugar cube data. Also a demo of using Excel for data exploration. sug-cub-data.xls has data Show summary stats Create scatter plot, manipulate plot Draw red line for mean, dotted line for +/- 1 std dev. wikipedia.org. For normally distributed data:

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  1. Brief presentation on data spread using sugar cube data. Also a demo of using Excel for data exploration. sug-cub-data.xls has data Show summary stats Create scatter plot, manipulate plot Draw red line for mean, dotted line for +/- 1 std dev

  2. wikipedia.org For normally distributed data: 68% of the values are within 1 standard deviation of the mean95% of the values are within two standard deviations99.7% of the values are within 3 standard deviations.

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