Descriptive Statistics

Great demonstration of a Scatter Plot of Health vs Wealth. Crash Course Statistics 1: What is Statistics? Mean, Mode and Median - Measures of Central Tendency Measures of Spread

Enlargements

Enlarging a shape from a centre of enlargement. How to enlarge with a positive scale factor. Enlargements with a fractional scale factor. Khan Academy video on scale factors and areas. Maths Made Easy Video on Enlargements.