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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 calculate and compare averages and measures of spread?

Finding the mean, median, mode and range, averages from frequency tables, and the median and interquartile range from grouped data at Higher tier.
A focused answer to the AQA GCSE Mathematics statistics content on averages and spread, covering the mean, median, mode and range, averages from frequency tables, and the median and interquartile range from grouped data at Higher tier.
9 min answer →

How do you draw and interpret statistical charts and graphs?

Drawing and interpreting bar charts, pie charts, frequency tables, and cumulative frequency graphs, box plots and histograms at Higher tier.
A focused answer to the AQA GCSE Mathematics statistics content on charts and graphs, covering bar charts, pie charts and frequency tables, and cumulative frequency graphs, box plots and histograms at Higher tier.
9 min answer →

How do you collect reliable data and choose a fair sample?

Types of data, populations and samples, random and stratified sampling, sources of bias, and designing good data collection.
A focused answer to the AQA GCSE Mathematics statistics content on sampling and data, covering types of data, populations and samples, random and stratified sampling, sources of bias, and designing good data collection.
8 min answer →

How do you use scatter graphs to describe correlation and make predictions?

Plotting scatter graphs, describing correlation, drawing a line of best fit, using it to estimate values, and recognising the limits of extrapolation.
A focused answer to the AQA GCSE Mathematics statistics content on scatter graphs and correlation, covering plotting scatter graphs, describing correlation, drawing a line of best fit, using it to estimate values, and the limits of extrapolation.
8 min answer →