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Bat Wings

Two students collected some data on the wingspan of bats, but each lost a measurement. Can you find the missing information?

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Mediant Madness

Kyle and his teacher disagree about his test score - who is right?

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Kate's Date

When Kate ate a giant date, the average weight of the dates decreased. What was the weight of the date that Kate ate?

Statistical Shorts

Age 11 to 16 Challenge Level:

Can you think of a situation when each statement isn't true?
Can you think of a situation when each statement is true?