MHT CET · Maths · Probability
For given data \(N=60, \sum X^2=18000\) and \(\sum X=960\), then variance of data is
- A 54
- B 34
- C 22
- D 44
Answer & Solution
Correct Answer
(D) 44
Step-by-step Solution
Detailed explanation
Variance \(=\frac{\sum x^2}{N}-\left(\frac{\sum x}{N}\right)^2=\frac{18000}{60}-\left(\frac{960}{60}\right)^2=300-256=44\)
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