Anna, Ben and Charlie have been estimating 30 seconds. Who is the best?
Find these 4 numbers, given their mode, median and range.
What happens to the average if you subtract 8 from all of the numbers?
Play around with sets of five numbers and see what you can discover about different types of average...
Given this information about averages, find the ages of these teachers.
The average temperature of six cities is 5$^\circ$C. What is the average temperature when two cities are added?
Start with two numbers and generate a sequence where the next number is the mean of the last two numbers...
What is the probability that the next person you meet has an above average number of arms?
What do these statistics about family size mean?
