COMEDK · Maths · 29. Statistics
Let 'P' be the mean deviation of the first five odd natural numbers about their mean and 'Q' be the mean deviation of the first five prime numbers about their mean. The \(Q-P=\)
- A 0.32
- B 0.23
- C 0.3
- D 0.2
Answer & Solution
Correct Answer
(A) 0.32
Step-by-step Solution
Detailed explanation
The first five odd natural numbers are \(1, 3, 5, 7, 9\). Mean \(\bar{x}_P = \dfrac{1 + 3 + 5 + 7 + 9}{5} = \dfrac{25}{5} = 5\). Mean deviation \(P = \dfrac{|1-5| + |3-5| + |5-5| + |7-5| + |9-5|}{5} = \dfrac{4 + 2 + 0 + 2 + 4}{5} = \dfrac{12}{5} = 2.4\). The first five prime…
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