AP EAMCET · Maths · Statistics
If the coefficients of variation of two distributions are 60 and 70 and their standard deviations are 21 and 16 respectively, then their arithmetic means are respectively
- A \(35,22.85\)
- B \(32,25.85\)
- C \(35,28.25\)
- D \(35,25.25\)
Answer & Solution
Correct Answer
(A) \(35,22.85\)
Step-by-step Solution
Detailed explanation
\(\mu = (\sigma / CV) \times 100\) \(\mu_1 = (21 / 60) \times 100 = 35\) \(\mu_2 = (16 / 70) \times 100 \approx 22.857 \approx 22.85\)
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