Just how accurate are the weather forecasts we hear every day? The table below compares the daily forecast with a city's actual weather for a year.
What percent of the time was the forecast correct?
A)74.2%
B)7.7%
C)81.9%
D)77.3%
E)18.1%

Question

Just how accurate are the weather forecasts we hear every day? The table below compares the daily forecast with a city's actual weather for a year. 
What percent of the time was the forecast correct?
A)74.2% 
B)7.7% 
C)81.9% 
D)77.3% 
E)18.1%

Quizplus · Accepted Answer

To find the percent of correct forecasts, we add up the number of days where the forecast and actual weather match (265 + 51) and divide by the total number of days (365).

Percentage of correct forecasts = (265 + 51) / 365 = 0.819

We can convert this decimal to a percent by multiplying by 100.

Percentage of correct forecasts = 0.819 x 100 = 81.9%

So the best choice is C) 81.9%.

Just How Accurate Are the Weather Forecasts We Hear Every