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Probability: the misconceptions that cost marks

3 wrong ideas students commonly carry in Probability. Each page has a one-question check and a careful explanation of what's actually true.

• After many heads in a row, is tails more likely on the next flip?Myth: After many heads, tails becomes more likely.
• Are mutually exclusive events independent?Myth: Mutually exclusive events are independent.
• Is P(A given B) the same as P(B given A)?Myth: P(A given B) equals P(B given A).

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