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Create a chart for the average and standard deviation in Excel

charts average standard deviation AVG STDEV trendlines error bars

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#1 archie



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Posted 04 October 2013 - 11:02 AM

Hello everone,


I want to create a chart that shows the average and standard deviation.  I have made a chart of my sales figures, but I don't know what to do next.  Can you help?





#2 Jonathan


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Posted 04 October 2013 - 11:23 AM

The easiest way to do this is to use Excel's 'trendlines' feature.


To add a two-period moving average trendline to the chart, click it and then click Chart Tools > Analysis > Trendline > Two Period Moving Average.

For more detailed instructions on this, including how to customise the number of moving average periods, see Essential Skills Lesson 5-25: Add a trend line.


For Standard Deviation, it's likely that you'll want to use 'error bars' instead of trendlines.  Error bars work in almost exactly the same way as trendlines. To add standard deviation error bars, click Chart Tools > Analysis > Error Bars > Error Bars with Standard Deviation.


If these options aren't what you're looking for, you may want to calculate the average and standard deviation figures within your data, by using the AVERAGE and STDEV functions.


For more on the AVERAGE function, see Essential Skills Lesson 2-11: Use AutoSum to quickly calculate averages.

For more advanced functions, see Expert Skills Session Three: Advanced functions and formulas.

Jonathan is part of the professional team who answer Excel-related questions posted on the ExcelCentral.com forums.
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