- A3
- B4.5
- C4
- D3.6
Step-by-Step Solution
Mean = 45 ÷ 5 = 9. The absolute deviations are 6, 3, 0, 3, 6 with sum 18, so the mean deviation is 18 ÷ 5 = 3.6.
Answer: D) 3.6
Find the mean deviation about the mean for the data 3, 6, 9, 12, 15.
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