We have different information and we need to make a table of that, so
cause...................Relative Frequency
Pilot Error............................613
Othe human error.............75
Weather...............................470
Mechanical Problems.....311
Sabotage............................342
Total: 1811
To calculate the relative distribution we need basically divide by the total and multiply for 100.
cause................................Relative Frequency
Pilot Error............................613/1811*100 =33.84%
Othe human error.............75/1811*100 = 4.1%
Weather...............................470/1811*100 = 25.95%
Mechanical Problems.....311/1811*100 = 17.17%
Sabotage...........................342/1811*100 = 18.88%
Total: 100%
So the relative frequency distribution is,
cause...................................Relative Frequency
Pilot Error............................33.84%
Othe human error.............4.1%
Weather..............................25.95%
Mechanical Problems.....17.17%
Sabotage...........................18.88%
Total: 100%
The vast majority of failures are made by pilots. The best thing to do is offer them more training. Many of these problems are due to ignorance of the terrain or carelessness due to the standardized level of security that flights generally have. Lack of practice in extreme situations can cause these problems.