Group Pandas dataframe based on highest occurring values
48808
GroupBy pandas DataFrame and select most common value
1131
Finding the row with the highest average in a numpy array
146061
How do I find numeric columns in Pandas?
26551
finding the index of a max value in R
39758
Collapse / concatenate / aggregate a column to a single comma separated string within each group
33487
R aggregate data in one column based on 2 other columns
157682
How do I operate on a DataFrame with a Series for every column
31013
How to select records with maximum values in two columns?
91428
GroupBy a list of associations with their keys
42943
Order discrete x scale by frequency/value
16572
pandas convert some columns into rows
90163
Disturbing odd behavior/bug in Python itertools groupby?
28559
How to sort a dataframe by multiple column(s)
96679
Group By Multiple Columns
147397
How do I combine two data-frames based on two columns?
39134
Subset data frame based on number of rows per group
88150
grouping on tems in a list in python