9 now make your overall distribution window a little

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9. Now make your overall Distribution window a little bigger by going to the bottom  right hand corner, waiting for the diagonal arrows to appear and dragging down  and to the right.  Next go up to the bottom right hand corner of the histogram (right  by the number 30) and do the same thing.   10.OK, just a couple of additional changes and we’ll wrap it up. 11.Above the histogram, lying on its side, is a box plot.  Put your cursor on the box plot  and  right click .  A menu will appear.  Notice that the first two items are checked.  Uncheck them one at a time.  Now you have a clean box plot that you can interpret.  This is used to detect “outliers,” but we have none in these data.  The line in the  middle of the box represents the mean.  The outside edges of the box are the 25 th  and 75 th  percentile for these data.  Look below and see how they correspond to the  numbers labeled “quartiles.”
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12.Now go back to the red diamond next to “Y on Page 151.”  Go down to the option  that is third from the bottom,  Continuous Fit .  The first option under this item is  Normal .  When you click it, a red curve will appear.  This represents a normal  distribution; the so-called bell-shaped curve.  We will come back to that curve  shortly.
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  • Winter '08
  • Signorielli,N
  • JMP software.  Click, Distribution window

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