The number of pages in 6 books are : 145, 135, 148, 162, 150 and 154. Find the average number of pages per book.

152

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145

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149

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146

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Solution

The correct option is C
149

$M e a n (A v e r a g e) = \frac{S u m o f o b s e r v a t i o n s}{N o . o f O b s e r v a t i o n s}$

$= \frac{S u m o f t h e p a g e s i n e a c h b o o k}{N o . o f b o o k s}$

$= \frac{145 + 135 + 148 + 162 + 150 + 154}{6}$

$= \frac{894}{6}$

= 149 pages

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The number of pages in 6 books are : 145, 135, 148, 162, 150 and 154. Find the average number of pages per book.

The correct option is C 149 Mean(Average)=Sum of observationsNo. of Observations =Sum of the pages in each bookNo. of books =145+135+148+162+150+1546 =8946 = 149 pages

The correct option is C
149

$M e a n (A v e r a g e) = \frac{S u m o f o b s e r v a t i o n s}{N o . o f O b s e r v a t i o n s}$

$= \frac{S u m o f t h e p a g e s i n e a c h b o o k}{N o . o f b o o k s}$

$= \frac{145 + 135 + 148 + 162 + 150 + 154}{6}$

$= \frac{894}{6}$

= 149 pages