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msb

USA
3 Posts
Posted - 08/30/2011 :  09:30:54 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi,
I just joined the forum. My first question: How can I use Origin to find the relative Mean absolute error? I have a set of data which I am comparing with experimental data. I need to know how good the set is as compared to the experiment data. Any other suggestions on how to compare would also be appreciated..

thanks..

Hideo Fujii

USA
1582 Posts
Posted - 08/30/2011 :  1:03:41 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi msb,

Not sure about the other measures, but for the simple Mean Absolute Errors, you can do:

1) Make a new column, and run the Set Column Values tool with the formula
    e.g., abs(col(A)-col(B)) when columns A and B are for actual values and forecasts, respectively.
2) Run Descriptive Statistics for the column to get the Mean.

Since current tool of descriptive statistics doesn't report it, the above may be a work-around.

Please other readers comment who are stat specialists...

--Hideo Fujii
OriginLab
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