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Effects of shifting, adding, & removing a data point

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Mariah works at a zoo. She was looking at some data showing the masses of their 5 African elephants. The mean mass of the elephants was 3,800kg, and the median mass was 3,600kg. The heaviest elephant, named Omar, was recorded as 6,000kg.
Mariah found out that Omar's mass was recorded incorrectly, and that Omar actually weighed 7,000kg.
How will Omar's mass increasing affect the mean and median?
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