I calculate percentile ranks based on the method at http://www.psychstat.missouristate.edu/introbook/sbk14m.htm I need to assign ranks to a dataset where ranks are ...
Say I have the following data, % students below average in math: S1 % of students at proficient level in math: S2 % of students at above proficient level: S3 S1 + S2 + S3 = 100% If I have this ...
This will sound weird, but I'm trying to calculate something that I don't know the name. I want to calculate how big/low a variable is in relation to the others. Like Google webmaster tools says ...
How can I add new variable into data frame which will be percentile rank of one of the variables? I can do this in Excel easily, but I really want to do that in R. Thanks