How do I calculate mean error from standard deviation?

[smither777]

hi,

can you help me in obtaining the mean error? I was able to obtain the standard deviation for my data, but i don't know how to get the mean error..
thank you very much!

 

[lurflurf]

hi,

can you help me in obtaining the mean error? I was able to obtain the standard deviation for my data, but i don't know how to get the mean error..
thank you very much!

The error is
|x-mean(x)|
so the mean error is
mean(|x-mean(x)|)
I think this is what is intended, but usually this quantity is called the mean absolute deviation.
The other posibility is if you knew for each sample what should have resulted then it could mean
mean(x_experimental-x_actual)
or
mean(|x_experimental-x_actual|)
Can't you look up exactly what was "mean error" means?

 

[thepatientmental]

Sure, I'd be happy to help! The mean error is a measure of the average difference between the observed values and the predicted values. To calculate it, you can use the following formula:

Mean error = (sum of absolute errors) / (number of data points)

To obtain the sum of absolute errors, you can take the absolute value of the difference between each observed value and its corresponding predicted value, and then add these values together. The number of data points is simply the total number of values in your dataset.

I hope this helps! Let me know if you have any further questions. Good luck!