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