Grouping observation and forming new variable
14082
SAS PROC Transpose Data
88150
grouping on tems in a list in python
5136
How to sum a variable by group
33329
Can I make conclusions with two independent samples?
39311
Generating data to follow given variogram
134949
Can someone confirm if I am running this generalized linear model in R correctly? Multiple observations in each experimental unit
31680
How can I group numerical data into naturally forming "brackets"? (e.g. income)
31119
Count number of rows per group and add result to original data frame
53816
Linear Regression With Groups vs. Points - Issue with Influence of Zeros
80901
How to combine several datapoints in one location to a single point varying in size accordingly?
152279
How to model sample change?
125106
Reversing a GroupBy operation
87266
Apply several summary functions on several variables by group in one call
132574
Get the means of sub groups of means in R
32474
Beginner tips on using plyr to calculate year-over-year change across groups
51764
python groupby behaviour?
112754
Create grouping variable for consecutive sequences and split vector