GCSE Maths Practice: bar-charts

Question 6 of 10

Repeat calculation for verification of estimated mean.

\( \begin{array}{l}\text{A bar chart shows: Low=10, Medium=15, High=20 students. Midpoints: 3,5,7. Estimated mean?}\end{array} \)

Diagram

Choose one option:

Ensure correct arithmetic.

Check all midpoints and frequencies before dividing.