Question

Among fatal plane crashes that occurred during the past

70

​years,

469

were due to pilot​ error,

65

were due to other human​ error,

501

were due to​ weather,

173

were due to mechanical​ problems, and

681

were due to sabotage.

Answer 1

Answer:

Given that,

Among fatal plane crashes that occurred during the past 70 ​years,

469 were due to pilot​ error,

65 were due to other human​ error,

501 were due to​ weather,

173 were due to mechanical​ problems, and

681 were due to sabotage.

Cause	Frequency	Relative frequency	Relative frequency (%)
Pilot error	469	469/1889=0.2483	24.8%
Other human​ error	65	65/1889=0.0344	3.4%
Weather	501	501/1889=0.2652	26.5%
Mechanical​ problems	173	173/1889=0.0916	9.16%
Sabotage	681	681/1889=0.3605	36.05%
Total=	=1889	=1	100%

Sabotage is the major cause of plane crash. It would be decrease by taking proper care during the operations.