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Mathematics

1 answer:

Ainat [17]3 years ago

4 0

Answer:

The relationship is that you make them into a fraction the 20 first then the other number. Then you reduce to get something like this 2/3. Then you multiply 3 by 20 to get 60= 2/60. then you do the same for the 2= 40/60. So that is how you do it. And to check my work, 2/5. 2/5• 12/12= 24/60

Step-by-step explanation:

If you were to go 30 mph, and you wanted to go 20 miles, they it will take you 40 minutes. 40 mph would take you 30 minutes. 50 mph would take you 24 minutes. The relationship is that you make them into a fraction

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4 years ago

What is true of the coefficient of variation?

DedPeter [7]

Answer:

A. The coefficient of variation is best used when comparing two data sets that use the same units of measure.

Step-by-step explanation:

The coefficient of variation (CV), is simply the standard deviation (itself a measure of variance or variation) relative to the mean of a distribution.

The coefficient of variation expresses a random variable’s variability in percentage terms. Therefore it is possible, through the coefficient of variation, to compare the variability of data across different samples, especially if the random variables are recorded in different units of measurement (such as cm, kg and minutes).

A coefficient of variation is always interpreted as a percentage. <u>Mathematical representation is:</u>

$Coefficient\ of\ variation\ = \frac{Standard\ deviation}{Mean}\ \%$