AP EAMCET · Maths · Statistics
If the variance of four numbers \(w, x, y\) and \(z\) is 9 , then the variance of \(5 w, 5 x, 5 y\) and \(5 z\) is
- A 225
- B \(5 / 9\)
- C 45
- D 54
Answer & Solution
Correct Answer
(A) 225
Step-by-step Solution
Detailed explanation
Let \(\bar{x}\) be the mean of 4 number…
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