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Most Popular Tutorials

3D Shapes

More 3D Shapes and Shape Nets. Learn about pyramids and solid shape nets.

Math-Mate.com/3DShapes

The Cosine Rule

Learn all about the cosine rule for triangles. Includes an example worked question.

Math-Mate.com/CosineRule

Frequency Polygons

Learn all about frequency polygons. Learn how to make one to display information.

Math-Mate.com/FrequencyPolygon

Index Laws

Learn all about index laws. Learn how indices change under multiplication and division.

Math-Mate.com/IndexLaws

Statistics

Simple random sampling

Systematic or interval sampling

Stratified sampling

Cluster sampling

Stratified sampling question

MEASURES OF SPREAD

Range

Quarters and quartiles

Interquartile range

Deviations

Mean deviation

STANDARD DEVIATION

Why do we divide by ‘n–1’?

Using your calculator to find statistical measures

Changing into statistical mode

Changing your calculator into statistical mode

Clearing the statistical memory

Inputting the data

Finding statistical information