## This module represents the second chapter of the book 
##  "Essential Math for Data Science" - Thomas Nield
##  Chaper 2 - Probability 

# 2.0 odds means than an events has twice the probabilities to happen than not
def p_odds_to_probability(o):
	return  (o / (1 + o))

def p_probability_to_odds(p):
	return (p / (1 - p))