Use Proportional Relationships Unit Test

Question

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Question
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.(4 points)

Answer 1

First, we need to determine the percent error using the formula:

Percent Error = |(Estimated Value - Actual Value) / Actual Value| * 100

Plugging in the values:
Percent Error = |(18 - 16) / 16| * 100
Percent Error = |2 / 16| * 100
Percent Error = 0.125 * 100
Percent Error = 12.5%

Therefore, Teresa's percent error in estimating the height of the giraffe is 12.5%.