Hello I have dataset I want to do 10-Fold cross validation using RStudio. In our_prediction column I say if the score is greater than 90 we predict it pass if it below we predict it not pass. My quest

HelloI have dataset I want to do 10-Fold cross validation using RStudio. In our_prediction column I say if the score is greater than 90 we predict it pass if it below we predict it not pass. My question is that I want to do 10 -Fold cross validation to make sure is 90 is the best value to split on it or there is another value that will give us a higher accuracy.