Pareto chart
When a company identifies a process as a candidate for improvement, the first step is to collect data on the
frequency of each type of failure. A computer-controlled lathe whose performance was below par, workers
recorded the following causes and their frequencies:
Cause Frequency
Power fluctuation 6
Controller not stable 22
Operator error 13
Worn tool not replaced 2
Other 5
1.1 Draw a pareto chart.
1.2 Give your comments