← Maths syllabus

EnglandMaths

Statistics

4 dot points across 4 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

How do you find and compare the mean, median, mode and range, including from frequency tables?

Calculate the mean, median, mode and range; find the mean from a frequency table and an estimated mean from grouped data; and compare distributions using an average and the range (and quartiles at Higher tier).
A focused answer to the OCR GCSE Mathematics statistics content on averages and spread, covering the mean, median, mode and range, the mean from frequency tables, the estimated mean from grouped data, and comparing distributions.
11 min answer →

How do you identify types of data, design a sample, and recognise bias in data collection?

Identify types of data (qualitative and quantitative, discrete and continuous); understand populations and samples; use random and stratified sampling; and recognise sources of bias.
A focused answer to the OCR GCSE Mathematics statistics content on sampling and data, covering types of data, populations and samples, random and stratified sampling, and recognising bias in data collection.
10 min answer →

How do you interpret correlation on a scatter graph, draw a line of best fit, and use it to make predictions?

Plot and interpret scatter graphs; describe correlation; draw a line of best fit; use it to estimate values; and understand interpolation, extrapolation and the difference between correlation and causation.
A focused answer to the OCR GCSE Mathematics statistics content on scatter graphs and correlation, covering positive, negative and no correlation, drawing a line of best fit, making predictions, and the difference between correlation and causation.
10 min answer →

How do you draw and interpret bar charts, pie charts, frequency polygons, histograms and box plots?

Draw and interpret statistical charts including bar charts, pie charts, frequency polygons, stem-and-leaf diagrams, box plots and histograms with unequal class widths (histograms at Higher tier).
A focused answer to the OCR GCSE Mathematics statistics content on statistical charts and graphs, covering bar charts, pie charts, frequency polygons, stem-and-leaf diagrams, box plots, and histograms with frequency density at Higher tier.
11 min answer →