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Statistical Charts for Manufacturing Company

A manufacturing company produces electric insulators. If the insulators break when in use, a short circuit will likely occur. To test the strength of the insulators, destructive testing in high powered labs is carried out to determine how much force is required to break the insulators. Force is measured by observing how much pounds must be applied before it breaks. The strength of 30 insulators are in the file.

Please help with the below questions:

a. Construct a frequency distribution and a percentage distribution.

b. Construct a histogram and a percentage polygon

c. Plot a cumulative percentage polygon

d. What can you conclude about the strength of the insulators if the company requires a force measurement of at least 1500 pounds before breaking.


Solution Summary

The solution gives step by step method for the preparation of Frequency table, Histogram, Frequency polygon and Cumulative frequency polygon.