The weatherman predicted that today's temperature would be 64°F. It was actually 38°F. What was the percent error of the weatherman's prediction?

Question

Responses
A 42.55%42.55%
B 40.63%40.63%
C 64.82%64.82%
D 68.42%

Answer 1

To find the percent error, we use the formula:

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

In this case, the predicted value is 64°F and the actual value is 38°F.

Plug in the values into the formula:

Percent Error = (|64 - 38| / 38) * 100%
Percent Error = (26 / 38) * 100%

Simplifying, we get:

Percent Error = (0.6842) * 100%
Percent Error = 68.42%

So the percent error of the weatherman's prediction is 68.42%.

Therefore, the correct answer is D 68.42%.