I have a data frame called measlescases comprised of columns like "Final Classification' 'ProvinceofResidence', 'AgeCategory', 'Vaccinationstatus', etc.
I would like to calculate the number of measles cases (obtained from the 'Final Classification' column) each by 'ProvinceofResidence', 'AgeCategory', 'Vaccinationstatus'.
Can someone give me a line of code using one of these columns as examples?
Thanks
YEt to try. Still new to R
