The following data represent the annual number of days over 100*F in a city from 195 to 2004. Approximate the mean and standard deviation of annual number of days over 100*F. Treat the data as a population.
# of over 100*F days
|
0-9
|
10-19
|
20-29
|
30-39
|
40-49
|
50-59
|
60-69
|
# of years
|
32
|
35
|
17
|
10
|
3
|
2
|
1
|
