AP EAMCET · Maths · Statistics
The mean deviation about the mean of the set of first ' \(n\) ' natural numbers, when ' \(n\) ' is an even number is equal to
- A \(n\)
- B \(\frac{n}{2}\)
- C \(\frac{n}{3}\)
- D \(\frac{n}{4}\)
Answer & Solution
Correct Answer
(D) \(\frac{n}{4}\)
Step-by-step Solution
Detailed explanation
Mean \(\bar{x}=\frac{1+2+\ldots . n}{n}=\frac{n(n+1)}{2 n}=\frac{n+1}{2}\) Here, \(n=\) even number Now mean deviation is…
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