ICSE BoardEnglish MediumSTD 10MathematicsStatistics2 Marks
Question
Find the mean of first five natural numbers.
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Answer
First five natural numbers are $1, 2, 3, 4$ and $5$
Hence,
$\text { Mean } \overline{ X }=\frac{\sum x}{ n } $
$ =\frac{1+2+3+4+5}{5} $
$=\frac{15}{5}=3 $
$ \overline{ X }=3$
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