Use pareto analysis to investigate the following data collected on a

6.13 use Pareto analysis to investigate the following data collected on a printed-circuit-board assembly line:

Defect Number of Defect Occurrences
Components not adhering 143
Excess adhesive 71
Misplaced transistors 601
Defective board dimension 146
Mounting holes improperly positioned 12
Circuitry problems on final test 90
Wrong component 212

 

a) Prepare a graph of the data.

b) What conclutions do you reach?