Question

Weatherman Glenn Burns predicts there to be 4.25 inches of rain on Saturday. On Saturday, it actually rains 6.5 inches. How much percent error was Glenn Burns from being accurate?

Answer 1

the prediction was about 35% too low

Explanation:

We generally define percent error as the difference between a measurement and an actual value, as a fraction of the actual value. Here, the actual value is 6.5 inches, so we can compute the error to be ...

(4.25 -6.5)/6.5 × 100% = -34.6%

Burns' prediction was about 35% too low.