based on the given results, the coefficient of variation can be found to be 45.54.
first, find the mean:
= (30 + 60 + 90 + 45) / 4
= 56.25
find the standard deviation using a spreadsheet:
= 25.61737691
the coefficient of variation is therefore:
= standard deviation / mean x 100
= 25.61737691 / 56.25 x 100
= 45.54
find out more on the coefficient of variation at https://brainly.com/question/13293164.
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