OCR GCSE Biology B · J257
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Graphical DisplayA point can show their mean, with a vertical range bar extending from the smallest to the largest measurement. This shows the spread of those repeats, not an exact boundary for the true value. Other kinds of uncertainty bar may be used, so a graph should say what its bars represent.