Draw Boxplot with Means in R (2 Examples) | Add Mean Values | points, text & stat_summary [ggplot2]

[@inaydweller9739]

thanks! was very usefull with my college stuff!!

[@StatisticsGlobe]

Thanks Inay! Glad it helped!

[@czr372]

Took me out of my 2 hours serch! short and just what I needed! Master!

[@StatisticsGlobe]

That's great to hear, glad it helped!

[@azzeddinereghais7494]

Good continuation

[@StatisticsGlobe]

Thanks Azzeddine, glad you think so! :)

[@johannafedorovsky4527]

Super clear and useful! How would you do to add Mean+SD as label? Is there a way to add the number of observations for each group? Thanks

[@StatisticsGlobe]

Thank you very much Johanna! Regarding your question: You may also calculate the SD using the aggregate function. Then, you may adjust the labels argument when creating the plot accordingly.

[@cchen5907]

Thanks! Do you perhaps know how to show the different means for each boxplot, in the case you add a third binomial variable on the graph (aes= x, y, fill=z)? In this case, the means stay in the middle of both boxplots and are not placed on their own boxplots...

[@StatisticsGlobe]

Hey, are you looking for this?
data

[@russtin1]

What does the ..y.. accomplish in the round function?

[@StatisticsGlobe]

Hey Russtin, without the ..y.. ggplot2 doesn't know that the y corresponds to the input data in the ggplot() function. If you remove the dots, the following error message is returned: "Error in paste("Mean:", round(y, digits = 1)) : object 'y' not found". Regards, Joachim