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Example 10 - Chapter 14 Class 9 Statistics (Term 1)

Last updated at May 29, 2018 by

Example 10 - People were asked about the time in a week - Mean

Transcript

Example 10 People were asked about the time in a week they spend in doing social work in their community. They said 10, 7, 13, 20 and 15 hours, respectively. Find the mean (or average) time in a week devoted by them for social work Mean time in a week devoted = (π‘†π‘’π‘š π‘œπ‘“ π‘Žπ‘™π‘™ π‘‘β„Žπ‘’ π‘œπ‘π‘ π‘’π‘Ÿπ‘£π‘Žπ‘‘π‘–π‘œπ‘›π‘ )/(π‘‡π‘œπ‘‘π‘Žπ‘™ π‘›π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ π‘œπ‘π‘ π‘’π‘Ÿπ‘£π‘Žπ‘‘π‘–π‘œπ‘›π‘ ) = (10 + 7 + 13 + 20 + 15)/5 = 65/5 = 13

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