Question

Solve The Given Attachment
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Give full explanation..
Don't Spam!!​

Answer 1

${\large{\pmb{\sf{\bigstar \:{\underline{Required \; Solution...}}}}}}$

~ Firstly let us make table related to this question, that is telling us about how many families in village have how many children.(By BrainlyButterfliee):

$\begin{gathered}\boxed{\begin{array}{c|c|c|c|c|c|c|c} \bf Number \: of \: children&\sf 0&\sf 1&\sf 2 &\sf 3&\sf 4&\sf 5\\\frac{\qquad \quad \qquad}{}&\frac{\quad \quad \quad}{}&\frac{\quad \quad\quad}{}&\frac{\quad \quad \quad}{}&\frac{\quad \quad \quad}{}&\frac{\quad \quad\quad}{}&\frac{\quad \quad\quad}{}\\\bf Number \: of \: families &\sf 11&\sf 25&\sf 32&\sf 10&\sf 5&\sf 1\end{array}}\end{gathered}$

~ Now let's make frequency table(By BrainlyButterfliee):

• How to find ${\sf{f_i x_i}}$ ? To find ${\sf{f_i x_i}}$ we just have to multiply 1st term by the second term. Let's see how!

$\begin{gathered}\begin{gathered}\boxed{\begin{array}{|c|c|c|} \bf \: \: Number \: of \: children & \: \bf \: Number \: of \: families & \bf \: f_i x_i \\ \\0 & 11 & 0 \\1 & 25 & 25\\2 & 32 & 62\\3 & 10 & 30\\4 & 5 & 20\\5& 1& 5\\&\sf \:\bf \: 85 \: is \: total& \: \bf144 \: is \: total \: \ \ \\ \end{array}}\end{gathered}\end{gathered}$

~ Now let's find mean, we just have to divide 144 by 85.

${\sf{:\implies 144/85}}$

${\sf{:\implies 1.714285}}$

Henceforth, 1.714285 is the mean term.

Answer 2

$\red{\bigstar \large\underline{\boxed{\bf\pink{Answer:-}}}}$

To find mean we will add the total number of children and then divide by the no of family .

Number of children=

$\sf \red{ \mapsto \: (0×11+1×25+2×32+3×10+4×5+5×1)} \\ \sf \blue{ \mapsto 144\: childrens}$

Number of family =

$\sf \green{ \mapsto11 + 25 + 32 + 10 + 5 + 1} \\ \sf \gray{ \mapsto84 \: families}$

Mean =

$\sf \orange{144 \div 84} \\ { \boxed{\sf \pink{ \mapsto1.7142}}}$

${ \boxed{ \underline{\sf \color{violet} {\therefore \: the \: mean \: of \: children \: per \: family = 1.7142}}}}$