I have the following problem: I want to put my data into tertiles:
BMI Tertile Group 20 Low 33 Medium 45 High 32 Medium`
Currently I only have the column "BMI". How do I do that? I can only find a quartile function in excel and this only tells me the number of the quartile but it doesnt put data into quartiles/tertiles.
Thank you so much for any hint!