In this module, you will learn how to quantify the spread of the dataset by calculating the variance and standard deviation in R.
Review core concepts you need to learn to master this subject
Interpretation of Variance
Standard Deviation Units
Variance is a measure of spread. It is calculated by finding the average of the squared differences between every observation and the mean. The resulting value is in units squared.
Portfolio projects that showcase your new skills
In this project, you will try to find the best time to plan a trip to London by looking at a weather dataset containing over 39,000 pieces of weather-related data!
Stress-test your knowledge with quizzes that help commit syntax to memory
In the equation for variance, what does the following term represent?