Bar plots with error
In the video, we saw how to incorporate error bars into our bar plot to give the viewer a sense of the uncertainty in our estimates. We used error bars of +/- 1 standard error, but it's also common to use +/- 2 standard errors since that roughly represents a confidence interval for the quantity of interest.
Cet exercice fait partie du cours
Analyzing Survey Data in R
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Add lower and upper columns to out
out_col <- mutate(out,
lower = ___,
upper = ___)