To find the percent error, we need to calculate the difference between the estimated value and the actual value, divide by the actual value, and then multiply by 100 to find the percentage.
Difference = Estimated value - Actual value = 18 - 16 = 2
Absolute Error = |Difference| = |2| = 2
Percent Error = (Absolute Error / Actual value) * 100
Percent Error = (2 / 16) * 100 = 0.125 * 100 ≈ 12.5%
Teresa's percent error is approximately 12.5%.
Teresa estimates that the height of a giraffe in a zoo is 18 feet. In fact, it is 16 feet tall.
What is Teresa's percent error? Use proportional relationships to solve the problem. Be sure to show all your work, provide your answer as a percentage, and round your answer to the nearest tenth.
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