We have a data set called BLOOD that contains from one to five observations per subject. Each observation contains the variables ID, GROUP, TIME, WBC (white blood cells), and RBC (red blood cells)....

We have a data set called BLOOD that contains from one to five observations per subject. Each observation contains the variables ID, GROUP, TIME, WBC (white blood cells), and RBC (red blood cells). Run the following program to create this data sel.

We want to create a data set that contains the mean WBC and RBC for each subject. This new data set should contain the variables ID, GROUP, M_WBC, and M_RBC where M_WBC and M_RBC are the mean values for the subject. Finally, we want to exclude any subjects from this data set who have two or fewer observations in the original data set (assume there are no missing values).