2.2.31 Among fatal plane crashes that occurred during the past 70 years, 217 were due to pilot error, 66 were due to other human error, 279 were due to weather, 254 we

problems, and 143 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

Cause

Frequency

Pilot error

Other human error

Weather

Mechanical problems

Sabotage

(Round to one decimal place as needed.)

tions

pport

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