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The following table shows the daily expenditure of $25$ households of a locality. Find the value of $x$. Hence find the mean daily expenditure.
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Solution: $4 + 2x + 1 + 12 + x + 2 = 25 \Rightarrow x = 2$
$\bar{x} = 1125 + \frac{-7}{25} \times 250$
$\bar{x} = 1055$
$\therefore$ mean daily expenditure $= \text{Rs} 1055$
$\bar{x} = 1125 + \frac{-7}{25} \times 250$
$\bar{x} = 1055$
$\therefore$ mean daily expenditure $= \text{Rs} 1055$