Luke is training for a marathon. The distance he covers each day is recorded in the table below.
What is the mean distance he covers in 7 days?

8 km

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7.1 km

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6.95 km

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6.1 km

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Solution

The correct option is D 6.1 km
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, we need to divide the sum of the distances he covered by the total number of days.

Thus, mean distance covered by Luke in seven days
= $\frac{6 + 8.2 + 6.8 + 9 + 4 + 3.2 + 6}{7}$ = 6.1 km

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