Question

Clare estimates that her brother is 4 feet tall. When they get measured at the doctor’s office, her brother’s actual height is 4 feet, 2 inches. What was the percent error for Clare’s estimate?

Answer 1

To calculate the percent error for Clare's estimate of her brother's height, the difference between her estimate and the actual height was divided by the actual height and then multiplied by 100%, resulting in a 4% error.

Step-by-step explanation:

The question asks how to calculate the percent error of Clare's estimate of her brother's height. To solve for percent error, we use the formula:

Percent Error = (|Approximate Value - Exact Value| / Exact Value) × 100%

In this case, Clare's estimate was 4 feet (or 48 inches) and the actual measurement was 4 feet, 2 inches (or 50 inches). Using the formula:

Percent Error = (|48 inches - 50 inches| / 50 inches) × 100%
= (2 inches / 50 inches) × 100%
= 4%

Therefore, the percent error for Clare's estimate is 4%.