Determine the sum of the frequencies.
[tex]\begin{gathered} N=357+60+135+187+609 \\ =1348 \end{gathered}[/tex]The relative frequency is equal to the ratio of individula frequency to the sum of frequency.
Determine the relative frequency for pilot error.
[tex]\begin{gathered} \text{ Pilot error=}\frac{357}{1348}\cdot100 \\ =26.483 \\ \approx26.5 \end{gathered}[/tex]Determine the relative frequency for other human error.
[tex]\begin{gathered} \text{Other human error=}\frac{60}{1348}\cdot100 \\ =4.45 \\ \approx4.5 \end{gathered}[/tex]Determine the relative frequency for Weather.
[tex]\begin{gathered} \text{Weather}=\frac{135}{1348}\cdot100 \\ =10.01 \\ \approx10.0 \end{gathered}[/tex]Determine the relative frequency for Mechanical problems.
[tex]\begin{gathered} \text{Mechanical problems=}\frac{187}{1348}\cdot100 \\ =13.87 \\ \approx13.9 \end{gathered}[/tex]Determine the relative frequency for sabotage.
[tex]\begin{gathered} \text{Sabotage}=\frac{609}{1348}\cdot100 \\ =45.17 \\ \approx45.2 \end{gathered}[/tex]So answer is,
Pilot error: 26.5%
Other human error: 4.5%
Weather: 10.0%
Mechanical Problems: 13.9%
Sabotage: 45.2%
