Perform train test split on iris dataset in r . First separate x and y variable.Before we separate them out, create vector/array of 1 and 2 to create train-test split in the ratio of 3:1. (Set a constant seed value so that we can duplicate the results.) So eventually, you will get the training Xs as a dataframe, training y-label (a vector), as well as the test sets together in four groups. Make sure the train-X and train-y are not mixed up in the ordering during the process. Same for test-X and test-y.