Ch.4: The Discrete Random VariableWorksheetSee all chapters
 Ch.1: Displaying Numeric Data 1hr & 19mins 0% complete Worksheet Ch.2: Measures of Center and Spread 2hrs & 18mins 0% complete Worksheet Ch.3: Probability and Rules 1hr & 44mins 0% complete Worksheet Ch.4: The Discrete Random Variable 53mins 0% complete Worksheet Ch.5: The Binomial Random Variable 1hr & 38mins 0% complete Worksheet Ch.6: Types of Continuous Random Variable Distributions 1hr & 35mins 0% complete Worksheet Ch.7: The Standard Normal Distribution (Z-Scores) 1hr & 22mins 0% complete Worksheet Ch.8: Using The Z-Score 1hr & 24mins 0% complete Worksheet Ch.9: Sampling Distributions: Mean 1hr & 22mins 0% complete Worksheet Ch.10: Sampling Distributions: Proportion 1hr & 31mins 0% complete Worksheet Ch.11: Hypothesis Testing: Part 1 1hr & 42mins 0% complete Worksheet Ch.12: Hypothesis Testing: Part 2 1hr & 43mins 0% complete Worksheet

# Discrete Random Variable Mean and Standard Deviation

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Concept #1: Determining the Mean and Standard Deviation of a Discrete Random Variable

Concept #2: Determining the Mean and Standard Deviation of a Discrete Random Variable: Intro

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

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

Practice: 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?