Asked by Karen

As cars passed a checkpoint ,the following speeds were clocked and recorded.
Speed (mph):55,62,61,54,68,72,59,61,70)
Find the mean and the range of the data set .
Answered by Reiny
for mean, add them up, then divide by 9

for range: subtract the lowest from the hightest
Answered by Karen
Would the mean be 62.44 and the range be -18
Answered by Dr. Jane
62.44 is correct.

The range is always positive because you subtract the lowest number from the highest number. It is 18.
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