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TiliK225 [7]
3 years ago
7

The mean of 20,12,29,15,49

Mathematics
1 answer:
Soloha48 [4]3 years ago
8 0
To find the mean of this set of data you must add all the numbers together, then divide by the numbers that you have. Since you have 5 numbers you would divide by 5 after adding them together. 

1st: ADD!!
20 + 12 + 29 + 15 + 49 = 125

2nd: divide by 5!
125 ÷ 5 = 25

So the mean of this data set is 25. 

Good Luck! :)
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Step-by-step explanation:

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$6.21

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The fraction of the variability in fuel economy is accounted for by the engine size is 59.91%.

Given that, r= -0.774.

To solve such problems we must know about the fraction of the variability in data values or R-squared.

<h3>What fraction of the variability in fuel economy is accounted for by the engine size?</h3>

The fraction by which the variance of the dependent variable is greater than the variance of the errors is known as R-squared.

It is called so because it is the square of the correlation between the dependent and independent variables, which is commonly denoted by “r”  in a simple regression model.

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Hence, the fraction of the variability in fuel economy accounted for by the engine size is 59.91%.

To learn more about the fraction of the variability visit:

brainly.com/question/2516132.

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Answer:

Step-by-step explanation:

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