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Data Handling II (Central Values) — Maths STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7MathsData Handling II (Central Values)2 Marks
Question
Find the mean of first 10 even natural numbers.
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Answer

The first 10 even natural numbers are 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20.
Let $\bar{\text{x}}$ denote their arithmetic mean. Then,
$\bar{\text{x}}$ = (2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20) ÷ 10
= 110 ÷ 10
= 10

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