Question

A zookeeper predicted the weight of a new baby elephant to be 275 pounds when it was born. The elephant actually weighed 307 pounds at birth. What was the percent error of the zookeeper's prediction?

Answer 1

Answer:

$\boxed{10.4 \%}$

Step-by-step explanation:

$\text{Percent error} = \frac{\lvert\text{Predicted - Actual}\lvert}{\text{Actual}} \times 100\%$

Data:

Predicted = 275 lb

  Actual = 307 lb

Calculation

$\text{Percent error} = \frac{\lvert275 - 307\lvert}{307} \times 100\%\\\\= \frac{\lvert-32\lvert}{307} \times 100\%\\\\= \frac{32}{307} \times 100\%$

= 0.104 × 100 %

= 10.4 %

The percent error of the zookeeper's prediction was $\boxed{10.4 \%}$.