Percentile calculation for the combined group
54726
Should 99 percentile of a union of two sets be the average of 99 percentile of each set?
81711
Joint CDF of 2 Unif(0,1) that are based on 3 other Unif(0,1)?
59898
Elementary manipulation with elements of group
88576
How to find the 25th, 50th, and 75th percentiles also know as the 1st, 2nd, and 3rd quartiles of the data-set?
7274
Calculate group mean (or other summary stats) and assign to original data
125656
Assessing group differences on multiple outcomes
13153
at least one element fixed by all the group
2060
How do I create group data in a category with more than and less than in R?
22365
What statistical test allows comparison of the 3rd quartiles between groups?
74400
How are percentiles calculated in Careers 2.0?
38829
Calculate the mean by group
128051
Calculating possible option of switching pairs in group
102329
How can I calculate the probability of a condition concerning ranked values from the same distribution?
49172
Stats on what proportion of my review decisions match the review outcome
81170
How to replace NA with mean by group / subset?
45299
User Rank -or- User Percentile Rating
96906
Calculating statistics on subsets of data