s010 
Random variable

s020 
Discrete and continuous random variables

s030 
Syntax for the probability of random variables

s040 
Probability distribution of random variables

s050 
Types of probability distributions

s060 
Parameter

s070 
Short summary

s080 
Independent random variables

s090 
Expected value of a random variable

s100 
Expected value of a discrete random variable

s110 
Variance of random variables
