**Concept:** Determining the Mean and Standard Deviation of a Discrete Random Variable

**Concept:** Determining the Mean and Standard Deviation of a Discrete Random Variable: Intro

**Problem:** What is the mean and standard deviation for the following distribution for the number of drinks you have during a night on the weekend?

**Problem:** What are the mean and standard deviation for the following probability distribution of your profits in a particular betting game?

**Problem:** A particular game of slots costs $1 to play and it has a 70% chance of losing. If you win, you either get $5 or the jackpot of $1,000. There?s a 29.99% chance of winning $5. What are the expected profit for this game and the corresponding variance for the distribution?