Concentration Inequalities
Also see the Data 102 notes on this topic.
Markov’s Inequality: http://prob140.org/textbook/content/Chapter_18/04_Chi_Squared_Distributions.html
Chebyshev’s Inequality: http://prob140.org/textbook/content/Chapter_18/04_Chi_Squared_Distributions.html
Chernoff Bound: http://prob140.org/textbook/content/Chapter_19/04_Chernoff_Bound.html?highlight=chernoff