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Introduction to a Mean

The number of...

Question

The number of items Julie packs in her lunch box are as shown in the table below. What is the mean number of items in her lunch box?

A

6.8

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B

6.4

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C

6.6

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D

6.2

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Solution

The correct option is D 6.2
Mean = $\frac{S u m o f a l l d a t a p o i n t s}{N u m b e r o f d a t a p o i n t s}$

Thus, to find the mean number of items, we need to divide the sum of all items in the box by the total number of items.

Thus, average number of items in Julie's lunch box = $\frac{8 + 17 + 3 + 2 + 1}{5}$ = 6.2

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