Percentages in box and whisker plots

[PDNinja333]

I want to transfer this box and whisker plot into what percentage is above and below a specific number, which is 20. So I have one plot that has the number in-between the minimum and the lower quartile. I don't know how to calculate the percentage of that.

 

[Dr.Peterson]

I want to transfer this box and whisker plot into what percentage is above and below a specific number, which is 20. So I have one plot that has the number in-between the minimum and the lower quartile. I don't know how to calculate the percentage of that.

Please show the details. It isn't clear what you know or what you are being asked for.

But it seems likely that the plot doesn't show enough to answer the question accurately, unless this is an artificial problem with just the right numbers. So tell us the context, too -- as we ask here:

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