Description
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Chapter 5
Problems 5-6, 5-8, 5-12, 5-13
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Explanation & Answer
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Engineering, Chapter 5
FREQUENCY DIAGRAMS AND HISTOGRAMS
5-6. Working in a call center is not an easy job. As customers contact the center, the employees
must access a variety of computer screens in order to answer customer questions. The Call Center
Six Sigma team is very interested in how long calls typically lasts. Use the following information for
“length of time of call” to create and interpret a histogram.
SOLUTION:
Calculating for the range:
Range = Highest weight – Lowest weight
= 12 – 1
= 11
Let width of the class interval = 4
Therefore, the number of class intervals = 11 /4 = 2.75 ≈ 3 intervals
FREQUENCY TABLE
L...