Question

2.150 a, b

The accompanying table gives a breakdown of the root causes of 83 accidents caused by management system failures:

Management System Cause Category	Number of Incidents
Engineering and Design	27
Procedures and Practices	24
Management and Oversight	22
Training and Communication	10
TOTAL	83

1. Compute the relative frequencies of the number of incidents for each cause category.
2. Construct a Pareto diagram for the data.

Answer 1