Statistics · JEE Preparation Mathematics
The arithmetic mean of five observations is 12. If 3 is added to each observation, what will be the new arithmetic mean?
Practice question from Statistics (JEE Preparation Mathematics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-E05B82
The arithmetic mean of five observations is 12. If 3 is added to each observation, what will be the new arithmetic mean?
- A.9
- B.12
- C.15Correct answer
- D.60
Solution
Adding a constant to every observation increases the arithmetic mean by the same constant. Therefore, the new mean is .
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