begin array - c - c - Whine x- i - f- i lWhine4 - 10 1Whine8 - 1111Wline5 - 9 1Whine2 - 1311Whinearray Find - fi xi from the given table-A- 208B- 434C- 199D- 350

The correct option is C 199 [ x_i amp; f_i amp; f_i x_i; 4 amp; 10 amp; 40; 8 amp; 11 ...

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Standard X

Mathematics

Cumulative Frequency

begin array |...

Question

$\begin{matrix} x_{i} & f_{i} 4 & 10 8 & 11 5 & 9 2 & 13 \end{matrix}$
Find $\sum f_{i} x_{i}$ from the given table.

434

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208

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199

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350

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Solution

The correct option is C
199

$\begin{matrix} x_{i} & f_{i} & f_{i} x_{i} 4 & 10 & 40 8 & 11 & 88 5 & 9 & 45 2 & 13 & 26 \sum f_{i} x_{i} \end{matrix} \Rightarrow \sum f_{i} x_{i} = (40 + 88 + 45 + 26) \Rightarrow \sum f_{i} x_{i} = 199$

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xifi41081159213 Find ∑fixi from the given table.

The correct option is C 199 xififixi4104081188594521326∑fixi⇒∑fixi=(40+88+45+26)⇒∑fixi=199

$\begin{matrix} x_{i} & f_{i} 4 & 10 8 & 11 5 & 9 2 & 13 \end{matrix}$
Find $\sum f_{i} x_{i}$ from the given table.

The correct option is C
199

$\begin{matrix} x_{i} & f_{i} & f_{i} x_{i} 4 & 10 & 40 8 & 11 & 88 5 & 9 & 45 2 & 13 & 26 \sum f_{i} x_{i} \end{matrix} \Rightarrow \sum f_{i} x_{i} = (40 + 88 + 45 + 26) \Rightarrow \sum f_{i} x_{i} = 199$