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.
This exercise is part of the course
Analyzing Survey Data in R
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Add lower and upper columns to out
out_col <- mutate(out,
lower = ___,
upper = ___)