01
Average means mean, always
An outlier wrecks the story and they do not know they needed the median.
Topic hub
Data handling
Data handling is asking a question of a set of numbers — what is typical, what is spread, what is misleading. Children struggle when mean, median and mode are three definitions with no sense of which question each answers.
Why this concept matters
Class 10 statistics is this, with more arithmetic. The arithmetic is not the hard part.
Misconceptions, in the order we see them
02
A graph is for making it look nice
Scale choices that lie are never discussed, so they cannot critique one.
03
Probability is data, data is probability
What happened vs what might happen, collapsed.
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