Thank you. I have printed out the info you suggested and am
in the process of studying it. I might have to get back to
you later.




>-----Original Message-----
>Peggy -
>
>When Brand X computes the average, it could also compute
the standard deviation.
>These could be placed in an adjacent worksheet range, and
used as the custom +/-
>error bar values. For more detailed instruction, look here:
>
> http://peltiertech.com/Excel/ChartsHowTo/ErrorBars.html
>
>- Jon
>-------
>Jon Peltier, Microsoft Excel MVP
>Peltier Technical Services
>Tutorials and Custom Solutions
>http://PeltierTech.com/
>_______
>
>Peggy wrote:
>
>> I have graphed some data where each data point is the
>> average of 5 replicates. I did the statistics in a program
>> other than Excel. In my Excel graph, under 'Format Data
>> Series' I have never understood how to add y error bars.
>> It seems to me the data set that generated the graph
>> doesn't have enough information to do this. It doesn't
>> know the value of each of the five replicates, just the
>> average.
>> What am I missing?
>
>.
>