### Learning about Averages and Probability

We talk about averages and probabilities all the time. We ask ourselves questions like “How well did I do on that test compared to the average?” or “What are the odds my team will win the game?” Although we talk about averages and probabilities a lot, do you know how averages and probabilities work. How they are calculated, and what factors contribute to uncertainty in these numbers? This week, we have some above average activities to help you explore averages and probabilities!

Online Videos: Use these links to educate and entertain!

Activities

Dice Bell Curve – What you get depends on what you put in! This activity looks at averages and probability to see how the results of a die roll in your favorite board game is affected by how many dice you’re using.

Sampling – An average is a single number that represents a list of numbers or measurements. But, how do we know the average of extremely long lists of numbers, like the height of all 12 year old kids in the United States? In a case like this, we would need to sample the population. But, how do we know how to sample? When is our sample large enough to represent the population? Learn the importance of sampling in this activity.

The Average Birthday – People use “average” to mean something in the middle of a group. There are actually three types of averages that scientists use, though, and knowing which one will help the most is an important skill!