माना प्रेक्षण x _{ i }(1 leq i leq 10) समीकरण | vedclass

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Question

$\sum_{i=1}^{10}\left(x_{i}-5\right)=10$

$\Rightarrow$ Mean of observation $\mathrm{x}_{\mathrm{i}}-5=\frac{1}{10} \sum_{\mathrm{i}=1}^{3}\left(\ma

Vedclass · Accepted Answer

$(3, 3)$

Vedclass · Answer

$\sum_{i=1}^{10}\left(x_{i}-5ight)=10$

$\Rightarrow$ Mean of observation $\mathrm{x}_{\mathrm{i}}-5=\frac{1}{10} \sum_{\mathrm{i}=1}^{3}\left(\mathrm{x}_{\mathrm{i}}-5ight)=1$

$\Rightarrow \mu=$ mean of observation $\left(\mathrm{x}_{\mathrm{i}}-3ight)$

$=\left(	ext { mean of observation }\left(\mathrm{x}_{\mathrm{i}}-5ight)ight)+2$

$=1+2=3$

Variance of observation

$\mathrm{x}_{\mathrm{i}}-5=\frac{1}{10} \sum_{\mathrm{i}=1}^{10}\left(\mathrm{x}_{\mathrm{i}}-5ight)^{2}-\left(\mathrm{Mean} 	ext { of }\left(\mathrm{x}_{\mathrm{i}}-5ight)ight)^{2}=3$

$\Rightarrow \quad \lambda=$ variance of observation $\left(\mathrm{x}_{\mathrm{i}}-3ight)$

$=$ variance of observation $\left(\mathrm{x}_{\mathrm{i}}-5ight)=3$ $	herefore \quad(\mu, \lambda)=(3,3)$

व्यास	$33-36$	$37-40$	$41-44$	$45-48$	$49-52$
वृत्तों संख्या	$15$	$17$	$21$	$22$	$25$

$X$	$1$	$3$	$5$	$7$	$9$
$(f)$	$4$	$24$	$28$	$\alpha$	$8$

${x_i}$	$60$	$61$	$62$	$63$	$64$	$65$	$66$	$67$	$68$
${f_i}$	$2$	$1$	$12$	$29$	$25$	$12$	$10$	$4$	$5$

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