Task $2$:

Further to your discussion in task $1,$ you will complete the below practical to highlight the effects of implementing a quality control tool.

A company manufactures electronic circuits in batches of $100.$ Each circuit is tested by QC for the current drawn when connected to a constant voltage. The acceptable limits for the current drawn is between $41-70mA,$ any circuits that do not fall within the limits will have to be scrapped. The typical test results pre and post the introduction of QC are shown in table $1\mathrm{.}1$ below.

$\backslash$table$[[,$Number of Circuits$],[$Current drawn $($mA$),$Before QC$,$After QC$],[1-10,4,1],[11-20,4,1],[21-30,5,3],[31-40,2,4],[41-50,18,20],[51-60,30,35],[61-70,21,23],[71-80,11,12],[81-90,2,1],[91-100,3,0],[$Total$,100,100]]$

Table $1\mathrm{.}1$ Circuit Test results per batch

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a$)$ Produce a graphical presentation of the data shown in Table $1\mathrm{.}1$ to illustrate the effects of adopting a culture of quality control.