Total deaths = 503+90+326+382+643=1944
relative frequency:
Pilot Error: 503/1944= 0.258 or 25.8%
Other human error: 90/1944= 0.046 or 4.6%
Weather: 326/1944= 0.168 or 16.8%
Mechanical Problems: 382/1944= 0.197 or 19.7%
Sabotage: 643/1944= 0.331 or 33.1%
Since the frequency of Sabotage is highest, Sabotage is the most serious threat to aviation safety. Airport security could be increased.
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The correct question “Among fatal plane crashes that occurred during the past 70 years, 503 were due to pilot​ error, 90 were due to other human​ error, 326 were due to​ weather, 382 were due to mechanical​ problems, and 643 were due to sabotage.”
