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From |
Joseph Wagner <joseph.wagner@wright.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: three mean and sd plots on the same graph? |

Date |
Wed, 07 Nov 2007 15:46:58 -0500 |

I created box plot graph with of 3 X variables over the same Y variable but was then asked to produce a similar graph this time using mean (not median) and +/- 95% CI. I don't think Stata can do this but thanks to a post by Nick three years ago, I was able to (sort of) create these:

egen mean = mean(cont), by(cat) egen sd = sd(cont), by(cat) gen upper = mean + sd

gen lower = mean - sd

scatter mean cat || rcap upper lower cat

. . . is the example Nick gave but how would (or could I?) do this for three different X variables (in Nick's example I suppose it would be 3 different 'cont' variables) on the same graph? I can do this for two but not 3 which brings me to my next problem:

The box plots I created earlier were each side by side for the same value of X (rather than on top of one another) but the two -rcap- graphs are on top of each other making it impossible to differentiate the two lines (three would be even worse). Is there a way to separate these lines or do I need to graph these data in another way altogether?

Thanks for your help.

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**Follow-Ups**:**Re: st: three mean and sd plots on the same graph?***From:*Maarten buis <maartenbuis@yahoo.co.uk>

**Re: st: three mean and sd plots on the same graph?***From:*Maarten buis <maartenbuis@yahoo.co.uk>

**st: RE: three mean and sd plots on the same graph?***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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