topic Re: Is it possible to plot multiple CDFs on the same plot? in Discussions

Is it possible to plot multiple CDFs on the same plot?

BHarris — Fri, 09 Jun 2023 00:17:28 GMT

Suppose I have a dataset of heights of men and women in a university, is it possible to plot two cumulative distribution function (CDF) lines on the same plot, one for men and one for women?

Re: Is it possible to plot multiple CDFs on the same plot?

ron_horne — Tue, 23 Jun 2020 22:14:07 GMT

Hi @BHarris

the answer is yes.

if you use the Fit Y by X platform you can ask for the CDF plot as in the picture. you can also set it up from the preferences so it will be presented by default each time you produce a oneway analysis.

Re: Is it possible to plot multiple CDFs on the same plot?

BHarris — Sat, 11 Jul 2020 03:33:34 GMT

Can I just say, that's incredibly unintuitive to my brain -- I never would've thought to look there. Why was that feature put there? Is there something special about the fit-y-by-x manipulation of the data that makes the CDF possible?

(I've used this many dozen times since you responded to this, thanks again for your help!!)

Re: Is it possible to plot multiple CDFs on the same plot?

Mark_Bailey — Sat, 11 Jul 2020 11:40:35 GMT

The location of the parallel CDF plots makes sense to me. You can get the CDF plot in the Distribution platform, but that is a univariate analysis. You can use a grouping variable in the By analysis role, but then you get separate CDF plots.

The Oneway platform, through the Fit Y by X command, uses two variables, a response and a factor. It is for comparing groups in various ways including the CDF.