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Scorpion4ik [409]
3 years ago
11

PLEASE HELP!! Show simple working out

Mathematics
1 answer:
motikmotik3 years ago
6 0
In order to estimate the mean, you need to choose a value to represent the number in each category of accidents. It is often convenient to use the middle value of the range.
.. (4*6 +10*10 +15*6 +20*9)/(6 +10 +6 +9) = 394/31 ≈ 12.7
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