9 Summer 2 Lesson 7

This lesson is from NRich Prize Giving

Objective This problem provides a context for exam questions which start ‘A bag contains 6 red balls and 2 blue ones …’By focusing purely on the technicalities of probability calculations, questions like this obscure the fact that sampling methods are very important.  How a sample is chosen can skew results quite dramatically.

This problem is designed to provide a scenario where sampling with and without replacement can be investigated, and the merits of each discussed alongside the merits of choosing one representative for the girls and one for the boys.

Resources Powerpoint (currently being made)
Worksheet