QUESTION $3$

$3\mathrm{.}1$ Describe the three $(3)$ problems that may be associated with moving averages

forecasting techniques.

$3\mathrm{.}2$ For the following causes of poor product quality at a job shop, prepare a fish$-$bone

$($cause and effect$)$ diagram based on the $4$Ms $($manpower$,$ material, methods and

machine$).$

$3\mathrm{.}3$ Develop a Pareto chart for the following customer complaints at TrelliGate Group

in the past $12$ months. Show full calculations including the percentages and the

cumulative percentages.