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 formulas.

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.

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.

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

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 portfolio weight, variance, and return. Discover how to use the portfolio return, weight, and variance formulas, and identify uses of portfolios.

How do you calculate budget variance? To calculate the budget variance, the company needs information about the actual income or expenses, and the budget that they had previously defined.

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.

Learn how to calculate the variance of the sampling distribution of a sample proportion, and see examples that walk through sample problems step-by-step for you to improve your statistics ...

Practice Finding Variance and Standard Deviation with practice problems and explanations. Get instant feedback, extra help and step-by-step explanations. Boost your Statistics and Probability ...