Basics of Statistics

May 20, 2022

Central tendencies

test
one item
second item

Mean or average

Sum of the data divided by its count

Median

Middle-most value if the number of data points is odd, or the average of the two middle-most values if the number of data points is even.

good algo: quickselect

Dispersion

How spread the data is.

Range

max - min

Variance / Standard deviation

Relationships between two datasets

Covariance

Correlation

Simpson's Paradox