Scarlett Johansson! One of the biggest names in the cinema circuit. And of course one of those faces half of the men alive around the globe desire for. And women, oh I would rather call it a blend of admiration and jealousy is what they have for this beautiful lady.

It is never easy to be a Hollywood star and be on a razor sharp scrutiny of media and people all the time. However, a lavish lifestyle comes as a part and parcel of it which makes them the people to look up to. You know, showbiz is always attractive ...

Root-mean-square error (RMSE) is a frequently used measure of the differences between values predicted by a model and the values actually observed.It represents the sample standard deviation of the differences between predicted values and observed values. The RMSE serves to aggregate the magnitudes of the errors in predictions for various times into a single measure of predictive power.

How does one calculate RMSE

RMSE can be calculated by below formula.

The following is the code to calculate RMSE in different languages & statistical packages:

R

The function rmse from hydroGOF package can be used to calculate RMSE between two values ...