Question 18
The table gives information about the number of kilometres that Ted cycled on each of the 30 days in April.
Calculate an estimate for the mean number of kilometres that Ted cycled on each day in April.
Edexcel IGCSE Math A Foundation 6.2.C estimated mean for grouped data
Practise estimated-mean questions by finding midpoints, multiplying by frequencies and dividing by the total frequency carefully.
How this is tested
- Find class midpoints from grouped intervals before estimating the total.
- Multiply each midpoint by its frequency and divide by the total frequency.
- State that the result is an estimate because grouped data uses interval midpoints.