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JEE Mains · Maths · STD 11 - 13. statistics

આવુતિ વિતરણ
\(X\)\(c\)\(2c\)\(3c\)\(4c\)\(5c\)\(6c\)
\(f\)\(2\)\(1\)\(1\)\(1\)\(1\)\(1\)
નું વિચરણ જો \(160\) હોય તો \(\mathrm{c} \in \mathrm{N}\) નું મૂલ્ય ............ છે.

  1. A \(5\)
  2. B \(8\)
  3. C \(7\)
  4. D \(6\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(7\)

Step-by-step Solution

Detailed explanation

\(x\) \(C\) \(2C\) \(3C\) \(4C\) \(5C\) \(6C\) \(f\) \(2\) \(1\) \(1\) \(1\) \(1\) \(1\) \(\bar{x}=\frac{(2+2+3+4+5+6) C}{7}=\frac{22 C}{7}\) \( \operatorname{Var}(\mathrm{x})=\frac{\mathrm{c}^2\left(2+2^2+3^2+4^2+5^2+6^2\right)}{7} \) \( -\left(\frac{22 c}{7}\right)^2 \)…
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