Quiz · Statistics & Data Analysis
Three kinds of average, and each tells a different story. Learn when to use the mean, median and mode, find the range, see how one extreme value can drag the mean off course, and read averages from a frequency table.
Make sense of data: averages and spread, reading real-world charts and tables, and spotting the difference between correlation and cause.
Before you start
You have 15 seconds for each question. When time runs out, the question counts as wrong.
Your first choice is the one that counts. It is checked straight away, with an explanation where there is one.
At the end you see your score and can go back through every question and its answer.
XP scales with your score. Replays earn XP only when you beat your previous best.
From players
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Mathematics · Statistics & Data Analysis
Ice-cream sales, museum visitors, a day in someone's life and the pets in a class: four real-world charts, each hiding facts to find. Compare, total, convert to fractions and percentages, and work out pie-chart angles.
Mathematics · Statistics & Data Analysis
Go beyond reading values: calculate averages and percentage changes from charts, work out pie-chart angles, find the interquartile range, combine weighted scores and spot misleading graphs. Statistics the way analysts use it.