sum, rmse of a variable

[R_A_G_]

Hello,

I have another question. Now I have both my estimated variable and original data and need to calculate bias, average and root mean square error, I can do the bias but do not know how to calculate the average and RMSE of the estimate column. My problem is that I do not know how to do arrays calculation

Thank

RG

[R_A_G_]

I also need to do countif  I need to find the percentage of 0 biases in my claculation

Thanks

[art297]

There are procs to do such things.  Take a look at proc means and proc freq