Bar plot with error bars in R

October 20, 2013
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(This article was first published on Heuristic Andrew » r-project, and kindly contributed to R-bloggers)

Here's a simple way to make a bar plot with error bars three ways: standard deviation, standard error of the mean, and a 95% confidence interval. The key step is to precalculate the statistics for ggplot2. Continue reading

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