Weighted Average Cost Per Notebook

This animation walks through a shopping scenario where 3 notebooks cost $2 each and 2 notebooks cost $5 each. It visually groups the notebooks, calculates total spending, counts total items, and divides to find the average cost per notebook. The key idea highlighted is that a weighted average depends on quantities, not just the prices themselves, making it distinct from a simple average of $2 and $5. Useful for students learning statistics or everyday budgeting math.

Narrated · 16:9 · Preview before teaching · automatic layout checks do not establish subject accuracy

The prompt that made it

A shopper buys 3 notebooks at $2 each and 2 notebooks at $5 each. What is the average cost per notebook? Color scheme: #17271F #101B16 #D6EE59 #F5F6F1 #5E6961 #D9DFD3 #FFFFFF Use lighter color for background. Audience: 13-18

Make your own version

Make the next one in this series

• Show how the weighted average changes if the shopper buys 5 notebooks at $2 instead of 3.
• Compare weighted average versus simple average using the same notebook prices.
• Animate a weighted average problem with three different prices and quantities.