Data Analysis — Mean, Median, and Mode
Mean, median, and mode are three ways to describe 'the middle' of a data set — and they can tell very different stories. One billionaire in a room full of teachers raises the mean salary dramatically but leaves the median unchanged. Students learn to choose the right measure and to question statistics they encounter.
What students explore
Mean, median, and mode are three ways to describe 'the middle' of a data set — and they can tell very different stories. One billionaire in a room full of teachers raises the mean salary dramatically but leaves the median unchanged. Students learn to choose the right measure and to question statistics they encounter.
Key ideas
Calculate the mean, median, and mode of a data set. Identify the effect of outliers on the mean. Choose the most appropriate measure of centre for a given context. Critically evaluate data displays and statistical claims.
Putting it together
Apply these ideas through hands-on activities, guided practice, and real-world problems.