In this article, you can find the list of the available aggregation functions for groupby in Pandas: * count / nunique – non-null values / count number of unique values * min / max – minimum/maximum * first / last - return first or last value per group * unique - all unique values from the group * std – standard deviation * sum – sum of values * mean / median / mode – mean/median/mode * var - unbiased variance * mad - mean absolute deviation * skew - unbiased skew * sem - standard e