Hassan Was the Company Plotter

question 181

Essay

Hassan was the company plotter. Give him any data set and he could plot a graph that was not only accurate, but also aesthetically pleasing. One afternoon he took some attribute data and plotted it as a p-chart. When Saba, his supervisor, saw the plot he insisted it be discarded and in its place a c-chart should be constructed. Hassan made the c-chart and noticed that when he placed the two charts one on top of the other, the lines created by the data points were exactly the same shape. Has our plotting colleague made a mistake? If not, why should there be these two types of charts when the data generate identical lines?

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Definitions:

Symbol

A sign or representation that stands for its object by convention, association, or resemblance.

Weld Symbol

A notation used on engineering drawings to specify the type, size, and other details of a weld, critical for manufacturing and assembly processes.

Fillet Weld

A type of weld used to join two pieces of metal at a right angle, characterized by its triangular cross-section.

Dimension

A measurable extent of some kind, such as length, breadth, depth, or height.