Practice Quiz

Six Sigma Green Belt

Category - Black Belt

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A company of over 13,000 employees conducted a survey and assigned numbers to those employees who have been hired within the previous 5 years (1) and in increments of 5 years from there on. Eight people have been with the company for 20 years. What is the plot below referred to?
  1. time-series analysis
  2. box plot
  3. stem-and-leaf
  4. histogram
Explanation
Answer: C -This plot is referred to as stem-and-leaf.

Key Takeaway: A stem-and-leaf display of data is a simply way of distributing a data set so that areas of concentration are apparent. The data is arranged so that the major groupings (the stem) are on the left while their frequency (the leaves) is on the right.
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