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Box Plot Error

I am running some simple analyses using the Fit Y by X function. When I create the plots there seems to be an error in drawing the box plots. Note in the right hand graphs in the attached plots, the median of the first one is greater than any of the individual values. The others seem similarly erroneous. When I calculate medians using the Tables function the values are correct.

Any suggestions would be welcome.

Richard Moon

5876_Spirometry Analysis Percent Change in Spirometry Control Studies 3-29-2014.jpg

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Re: Box Plot Error

Hi Richard,

I notice that you've got a number of excluded rows. Did you exclude them before or after you opened Fit Y by X?

If after, you'll need to redo the analysis to reflect the exclusion.

If that's not it, can you attach you're data table here so we can take a look at what might be going on?


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