An oil-well contractor drills a shaft 7 meters deeper into the ground every 2 hours. Which graph has a slope that best represent
s this rate?
2 answers:
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Answer: b. 30%
Step-by-step explanation:
- A measure of relative variability is known as coefficient of variation. It is the ratio of the standard deviation to the mean.
i.e.
Given: mean =
Variance =
Now,
in percent ,
Hence, correct option is b. 30%.