Learn how to find variance and standard deviation and see examples that walk through solutions, step-by-step, so you can improve your math knowledge and skills.

What is population variance, and what is its significance? Learn how to use the population variance formula, and understand population variance vs sample variance.

In this lesson, learn what population variance is and the formula to calculate it. Learn the difference between sample variance and population variance and why they have different …

Learn about sample variance and compare it to population variance. Explore how to find sample variance using the formula and see the sample variance symbol.

Learn how to calculate the variance of a binomial distribution, and see examples that walk through sample problems step-by-step, so that you can improve your statistics knowledge and skills.

Master the calculation of sample mean and variance with our 5-minute video lesson. Learn from practice problems and take a quiz to test your knowledge!

Learn about variance and compare variance vs. standard deviation. Explore how to find variance and study a sample variance problem using the steps in variation.

Find the variance and standard deviation round your answer to two decimal places 5. The number of sales a salesman had in the previous 7 days are: 5, 1, 2, 1, 6, 5, and 1.

Learn how to calculate the variance of a discrete random variable, and see examples that walk through sample problems step-by-step for you to improve your statistics knowledge and skills.

Learn how to calculate the variance of the difference of two independent discrete random variables, and see examples that walk through sample problems step-by-step for you to …