Copyright

Ch 24: Variance, Probability & Distributions

About This Chapter

If you need to boost your understanding of variance, probability and distributions in math, look no further than this convenient study guide chapter. Complete the chapter's lessons and quizzes at any time to get ahead in class, finish a homework assignment or prepare for an upcoming exam.

Variance, Probability & Distributions - Chapter Summary

In this chapter, you'll find short video lessons that simplify variance probability and distribution topics. Our expert instructors define topics like binomial and normal distribution, random variables, sample variance and much more. When you're finished with the chapter, you'll be able to:

  • Evaluate examples of population and sample variance
  • Graph probability distributions that are associated with random variables
  • Interpret a continuous random variable's expected value
  • Find expected values and theoretically develop continuous probability distributions
  • Approximate binomial probabilities through normal distribution
  • Define binomial distribution

The chapter comes with multiple-choice quizzes to help you check your understanding of important lesson topics. Be sure to take the chapter's multiple-choice exam, and if you need any help understanding the material, our instructors will be happy to assist you. You can also access these resources on any device that has an Internet connection.

6 Lessons in Chapter 24: Variance, Probability & Distributions
Test your knowledge with a 30-question chapter practice test
Population & Sample Variance: Definition, Formula & Examples

1. Population & Sample Variance: Definition, Formula & Examples

Population and sample variance can help you describe and analyze data beyond the mean of the data set. In this lesson, learn the differences between population and sample variance.

Graphing Probability Distributions Associated with Random Variables

2. Graphing Probability Distributions Associated with Random Variables

What's a random variable? Does it have anything to do with gambling? What's the difference between a continuous and a discrete variable? This lesson explains the difference and how to graph each one.

Finding & Interpreting the Expected Value of a Continuous Random Variable

3. Finding & Interpreting the Expected Value of a Continuous Random Variable

How can you find the expected value of something like height distributions? This lesson explains how to find and interpret the expected value of a continuous random variable.

Developing Continuous Probability Distributions Theoretically & Finding Expected Values

4. Developing Continuous Probability Distributions Theoretically & Finding Expected Values

What is an expected value? How can you tell how many time you should expect a coin to land on heads out of several flips? This lesson will show you the answers to both questions!

Using Normal Distribution to Approximate Binomial Probabilities

5. Using Normal Distribution to Approximate Binomial Probabilities

Binomial probabilities describe processes in our world. Learn how to create and interpret a binomial probability distribution graph, and discover how the normal distribution can form a good approximation of the binomial distribution.

Binomial Distribution: Definition, Formula & Examples

6. Binomial Distribution: Definition, Formula & Examples

You have a probability distribution to create, which one do you use? That depends. In this lesson, learn about binomial distributions, get examples and criteria for their use, and learn how to calculate the binomial distribution formula.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Other Chapters

Other chapters within the MHT-CET: Practice & Study Guide course

Support