Weather forecasts. Just how accurate are the weather forecasts we hear every day? The following table compares the daily forecast with a city's actual weather for a year:
|
|
|
Actual Weather
|
|
|
|
Rain
|
No Rain
|
|
Forecast
|
Rain
|
27
|
63
|
|
No Rain
|
7
|
268
|
a) On what percent of days did it actually rain?
b) On what percent of days was rain predicted?
c) What percent of the time was the forecast correct?
d) Do you see evidence of an association between the type of weather and the ability of forecasters to make an accurate prediction? Write a brief explanation, including an appropriate graph.