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If each observation in a data set is increased by 3, the mean will:

Class 7Arithmetic MeanData Handling
  • AIncrease by 3
  • BStay the same
  • CIncrease by 3 times
  • DDecrease by 3

Step-by-Step Solution

Adding 3 to every value adds 3 to the total per observation, so the mean also rises by 3.
Answer: A) Increase by 3

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