Question

among total plane crashes that occurred during the past 55 years, 837 were due to pilot error, 52 were due to other human error, 497 were due to weather, 249 were due to mechanical problems, and 51 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 relative frequency pilot error other human error weather mechanical problems sabotage (round to one decimal place as needed.)

Explanation:

Step1: Calculate total number of crashes

$837 + 52+497 + 249+51=1686$

Step2: Calculate relative frequency for pilot - error

Relative frequency of pilot error $=\frac{837}{1686}\times100\%\approx49.7\%$

Step3: Calculate relative frequency for other human - error

Relative frequency of other human error $=\frac{52}{1686}\times100\%\approx3.1\%$

Step4: Calculate relative frequency for weather

Relative frequency of weather $=\frac{497}{1686}\times100\%\approx29.5\%$

Step5: Calculate relative frequency for mechanical problems

Relative frequency of mechanical problems $=\frac{249}{1686}\times100\%\approx14.8\%$

Step6: Calculate relative frequency for sabotage

Relative frequency of sabotage $=\frac{51}{1686}\times100\%\approx3.0\%$

Answer:

Cause	Relative Frequency
Other human error	$3.1\%$
Weather	$29.5\%$
Mechanical problems	$14.8\%$
Sabotage	$3.0\%$

The most serious threat to aviation safety is pilot error. To address this, more rigorous pilot training programs can be implemented, including recurrent training on emergency procedures, decision - making under stress, and updated knowledge of aircraft systems. Also, better pre - flight and in - flight monitoring of pilots' physical and mental states can be carried out.