# Averages

**41**NRICH Mathematical resources connected to

**Averages**

problem

### Bat Wings

Two students collected some data on the wingspan of bats, but each lost a measurement. Can you find the missing information?

problem

### Average temperature

The average temperature of six cities is 5$^\circ$C. What is the average temperature when two cities are added?

problem

### Number of arms

What is the probability that the next person you meet has an above average number of arms?

problem

### Unequal Averages

Play around with sets of five numbers and see what you can discover about different types of average...