Among fatal plane crashes that occurred during the past 70 years, 497 were due t

Question

Among fatal plane crashes that occurred during the past 70 years, 497 were due to pilot error, 62 were due to other human error, 143 were due to weather, 558 were due to mechanical problems, and 279 were due to sabotage. Construct the relative frequency distribution. What is the most serious threat to aviation safety, and can anything be done about it? Complete the relative frequency distribution below Relative Frequency Cause Pilot error Other human error Weather Mechanical problems Sabotage Round to one decimal place as needed.)

Explanation / Answer

Solution :

From given information,

=> Total number of plane crashes = 497 + 62 + 143 + 558 + 279 = 1539

=> proportion of plane crashes due to pilot error = 497/1539 = 0.3229 = 32.3%

=> proportion of plane crashes due to other human error = 62/1539 = 0.0402 = 4.0%

=> proportion of plane crashes due to weather = 143/1539 = 0.0929 = 9.3%

=> proportion of plane crashes due to mechanical problems = 558/1539 = 0.3625 = 36.3%

=> proportion of plane crashes due to sabotage = 279/1539 = 0.1812 = 18.1%

Cause Relative frequency

Pilot error 32.3%

other human error 4.0%

weather 9.3%

mechanical problems 36.3%

sabotage 18.1%

=> Since, we can see that the proportion of plane crashes due to mechanical problems is maximum , it is the most serious threat to aviation safety. The proportion of crashes due to pilot error is also very close to it

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