Question

among fatal plane crashes that occurred during the past 55 years, 506 were due to pilot error, 57 were due to other human error, 347 were due to weather, 209 were due to mechanical problems, and 56 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.
cause\trelative frequency
pilot error\t
other human error\t
weather\t
mechanical problems\t
sabotage\t
(round to one decimal place as needed.)

Explanation:

Step1: Calculate total number of crashes

$506 + 57+347 + 209+306=1425$

Step2: Calculate relative frequency for pilot error

Relative frequency of pilot error $=\frac{506}{1425}\times100\%\approx35.5\%$

Step3: Calculate relative frequency for other human error

Relative frequency of other human error $=\frac{57}{1425}\times100\% = 4.0\%$

Step4: Calculate relative frequency for weather

Relative frequency of weather $=\frac{347}{1425}\times100\%\approx24.4\%$

Step5: Calculate relative frequency for mechanical problems

Relative frequency of mechanical problems $=\frac{209}{1425}\times100\%\approx14.7\%$

Step6: Calculate relative frequency for sabotage

Relative frequency of sabotage $=\frac{306}{1425}\times100\% = 21.5\%$

Answer:

Cause	Relative Frequency
Other human error	4.0%
Weather	24.4%
Mechanical problems	14.7%
Sabotage	21.5%

The most serious threat to aviation safety is pilot error. To address this, more rigorous pilot - training programs can be implemented, including regular refresher courses, simulator training, and better mental - health support for pilots to reduce human - error related crashes.