I have measured the RMSE for both groups for different dentures, but have an issue with the statistical test that I should be using? can I use Paired T_test? or what test should I go for to combine all RMSE values of all dentures in each group? and how to compare two models for statistical significance?
Independent Sample T Test and Paired Sample T Test will compare the mean between two groups, also you can compare two regression models using MSE or RMSE
I wouldn't recommend t tests but probably would suggest some type of F test if the assumptions were satisfied , the degrees of freedom were known, and if the sampling distribution was known to be F. Note that some work would be required to argue that F was the way to go here. Best wishes, David Booth
Hi Eman
RMSE means the standard deviation of errors.Therefore, its square is the variance of errors (MSE). You can devide error MS of one model (i.e. MSE) by the error MS of another model and compare the resulting F with F table based on corresponding DF of model's error for both models.
That simple.
Best
Hani
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