You'll be able to choose error bars for XY, Column and Grouped graphs. Choose the color of the error bars, the direction (up, down or both), the style (capped or not) and thickness.
Notes on error bars:
•Prism can plot several kinds of error bars: SD, SEM, interquartile range, etc. Choose this at the top of the Format Graph dialog in the style section. If you entered error values directly, then you can plot those values only.
•In XY graphs, you can plot the error bars as error envelopes or bands and fill the area between the two bands.
•Survival graphs deal with error bars differently.