Aggregate functions
All for dataframes
.count() returns the count of the number of elements in each row.
.sum() returns the summed rows. String rows concatenate, number rows addition, bool rows, well, bools are converted to ints then added
.prod() returns the product rows. Cannot work if there are strings.
you can also use these for regular series aswell.
Statistical functions
.mean() gets the average granted there is no string rows
.median() middle element good if you have a lot of outliers
.mode() value that occurs most often
.std() standard deviation. How much do the values tend to deviate from the mean
.max() return maximum number
.min() return minimum number
.describe() a description of all previously mentioned statistics.