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liberstina [14]
2 years ago
6

Michael thought he could read 23 pages of his book in class. He was only able to read 20. what is his percent error

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
8 0
Percent error is calculated using

((Actual - predicted) / actual) * 100

In this case, the actual value of the number of pages he read is 20. The expected value was 23. So simply plug in:

((20 - 23) / 20) * 100 = -15%

Please don’t forget to like and mark brainliest
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The regression analysis evaluates the amount of relationship that exists

between the variables in the analysis.

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Reasons:

First part;

The given data is presented as follows;

\begin{tabular}{|cc|c|}Lemon Imports (x) &&Crash Fatality Rate\\232&&16\\268&&15.7\\361&&15.4\\472&&15.5\\535&&15\end{array}\right]

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Where;

b = \mathbf{\dfrac{\sum \left(x_i - \bar x\right) \times \left(y_i - \bar y\right) }{\sum \left(x_i - \bar x\right )^2 }}

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\overline x = The mean lemon import = 373.6

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Second part;

When the imports is 425 metric tons of lemon, we have;

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Therefore;

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Given that the predicted value is between the values for 268 and 535, we

have that the prediction is approximately correct or worthwhile

<u>The prediction is worthwhile</u>

Learn more about regression equation here:

brainly.com/question/5586207

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