The following table gives the number of commercial airline accidents and the total number of resulting fatalities in the United States in the years from 1985 to 2006.
(a) Represent the number of yearly airline accidents in a frequency table.
(b) Give a frequency polygon graph of the number of yearly airline accidents.
(c) Give a cumulative relative frequency plot of the number of yearly airline accidents.
(d) Find the sample mean of the number of yearly airline accidents.
(e) Find the sample median of the number of yearly airline accidents.
(f ) Find the sample mode of the number of yearly airline accidents.
(g) Find the sample standard deviation of the number of yearly airline accidents.
U.S. Airline Safety, Scheduled Commercial Carriers, 1985-2006
|
Year
|
Departures(millions)
|
Acci- dents
|
Fatal-ities
|
Year
|
Departures(millions)
|
Acci- dents
|
Fatal-ities
|
|
1985
|
6.1
|
4
|
197
|
1996
|
7.9
|
3
|
342
|
|
1986
|
6.4
|
2
|
5
|
1997
|
9.9
|
3
|
3
|
|
1987
|
6.6
|
4
|
231
|
1998
|
10.5
|
1
|
1
|
|
1988
|
6.7
|
3
|
285
|
1999
|
10.9
|
2
|
12
|
|
1989
|
6.6
|
11
|
278
|
2000
|
11.1
|
2
|
89
|
|
1990
|
7.8
|
6
|
39
|
2001
|
10.6
|
6
|
531
|
|
1991
|
7.5
|
4
|
62
|
2002
|
10.3
|
0
|
0
|
|
1992
|
7.5
|
4
|
33
|
2003
|
10.2
|
2
|
22
|
|
1993
|
7.7
|
1
|
1
|
2004
|
10.8
|
1
|
13
|
|
1994
|
7.8
|
4
|
239
|
2005
|
10.9
|
3
|
22
|
|
1995
|
8.1
|
2
|
166
|
2006
|
11.2
|
2
|
50
|