Statistics rewards precision: which average is appropriate, what the correlation actually shows, and whether the data is discrete or continuous.
Classifying and Interpreting Data
Statistics starts before any calculation: you have to know what kind of data you are holding. This page covers discrete and continuous data, quantitative and qualitative ...
6 questions · 15 marks
Revise this topicAverages and Measures of Spread
Averages and spread are the two things Cambridge compares when it asks you to compare two sets of data, so this topic is about choosing the right measure and showing the ...
7 questions · 19 marks
Revise this topicStatistical Charts and Diagrams
Cambridge names five diagrams here: bar charts, pie charts, pictograms, stem-and-leaf diagrams and simple frequency distributions. Each one is good at a different job, an...
7 questions · 19 marks
Revise this topicScatter Diagrams
A scatter diagram plots two measurements of the same item against each other, so you can see whether they are related. Cambridge asks you to plot the points, describe the...
7 questions · 17 marks
Revise this topicCumulative Frequency Diagrams
Cumulative frequency is Extended-only content, and it is the part of statistics where the marks come from reading a graph accurately. This page goes from the running tota...
7 questions · 16 marks
Revise this topicHistograms
Histograms are Extended-only content, and almost every mark in them comes from one idea: on a histogram it is the area of a bar, not its height, that stands for the frequ...
7 questions · 17 marks
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