Being Resilient - Statistics

In a Box

Age 14 to 16 Challenge Level:

Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?

Odds and Evens

Age 11 to 14 Challenge Level:

Are these games fair? How can you tell?

Substitution Cipher

Age 11 to 14 Challenge Level:

Find the frequency distribution for ordinary English, and use it to help you crack the code.

M, M and M

Age 11 to 14 Challenge Level:

If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?


Age 11 to 16 Challenge Level:

Can you do a little mathematical detective work to figure out which number has been wiped out?