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olga nikolaevna [1]
2 years ago
5

HELP PLEASE 13 POINTS

Mathematics
1 answer:
dimulka [17.4K]2 years ago
4 0

Answer:

164

Step-by-step explanation:

The formula is *4

41*4=164

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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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Now, the variability in fuel economy = r²= (-0.774)²

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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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