Question

Race TimesThe dot plot shows predictions for the winning time in the 200-metersprint. The winner finished the race in 22.4 seconds. What is thegreatest percent error among the predictions?222 223 224 225 226 227 228 229SecondsE%.The greatest percent error among the predictions is(Round to the nearest tenth as needed.)

Answer 1

The percent error is computed as follows:

`\text{ Percent error = }\fracestimated\text value - actual value{\text{actual value}}\cdot100`

The greatest percent error is obtained with an estimated value of 22.9 seconds. The actual value is 22.4 seconds, then:

`\begin{gathered} \text{ Percent error = }(|22.9-22.4|)/(22.4)\cdot100 \\ \text{ Percent error = }(0.5)/(22.4)\cdot100 \\ \text{ Percent error = }2.2\text{ \%} \end{gathered}`