Averages and Spread | OCR GCSE Higher Maths | 40 Worked Examples (J560)

A complete, fully worked pack on Averages and Spread for OCR GCSE (9-1) Higher tier Maths (J560). 40 questions in progressive difficulty (Easy to Challenging), each with a fully worked solution: one atomic step per line, a plain-English note on every working line, and OCR-style mark-scheme annotations (M/A/B marks) folded in on the real credit-bearing lines. Covers mean, median, mode and range for ungrouped data; estimated mean, modal class and median class from grouped frequency tables; quartiles and the interquartile range; stem-and-leaf diagrams; box plots (reading and comparing); cumulative frequency graphs (median, quartiles, IQR and estimates); combined and reverse mean problems; and comparing distributions using an average and a measure of spread. Matched to OCR strand 12 (Statistics), spec reference 12.03a Summary statistics (DfE S4/S5). Includes a ‘no formula sheet’ recall box, because OCR provides no statistics formulae in the exam. Ideal for revision, homework and exam practice. Hand-written by Aaditya Kalwani for Locus Tutors.