I believe that the great Creator has put ores and oil on this earth to give us a breathing spell. As we exhaust them, we must be prepared to fall back on our farms, which is God\'s true storehouse and can never be exhausted. We can learn to synthesize material for every human need from things that grow.
— George Washington Carver
A random variable is a variable whose value is unknown or a function that assigns values to each of an experiment’s outcomes. Random variables are often designated by letters and can be classified as discrete, which are variables that have specific values, or continuous, which are variables that can have any values within a continuous range.