Free preview
One-variable statistics
Getting to know you
▶ Statistical questions
Statistics is about collecting, presenting, and analyzing data. Variability, a key concept in statistics, refers to how much data points differ from each other. Statistical questions require collecting data with variability to answer. For example, asking about the average number of cars in a parking lot on Monday mornings is a statistical question.
▶ Numerical and categorical data
Learn how to tell whether data is numerical or categorical by looking at the types of answers a statistical question produces.
Enjoying the free preview?
Sign up free
Go Pro
Lessons after number 3 are reserved for Pro members — unlock the full course and every other one.