Error bars from data

Question

Hello,
I am trying to graph several columns of data with percentage confidence intervals in the adjacent column into a graph, but I can not seem to get Numbers to understand where the error bar numbers are and to which data they correspond. At the very least, Numbers does not display any error bars.
Perhaps it is confused by the Header bars and 'gives up'?
In the same vein, I wonder if there is a way to get Numbers to take error data along with the mean value by parsing an expression, a la, "### ± #.#%" == "mean value" ± "confidence as a percentage of mean value", and most importantly use that parsed expression for graphing.
Anyway, thank you in advance.

Answer 1

In the Chart inspector, Series tab, Advanced is where you set error bars. Select a series on your chart. Choose whether you want positive bars, negative bars, or both then choose custom. Click in one of the entry fields and select the error bar data from your table.
Percentage error data will not display as you wish. For example, a 50% error will chart as 0.5, not 50% of the data point value. You will have to do the multiplication in your table.
If you need mean value charted, you'll have to chart them yourself. Error bars are error bars and no more.