You are given the following data on the price/earnings (P/E) ratios for twelve companies. Construct a stem-and-leaf display. Specify the leaf unit for the display. 
Definitions:
Developmental Milestones
Specific functional and physical abilities that most children achieve by a certain age, used as indicators of typical child development.
Vocabulary
The set of words known and used by a person in speech and writing.
Private Speech
Verbal communication directed at the self, typical in early childhood, and used for self-guidance and regulation.
Self-Regulation
An individual’s ability to prevent himself or herself from making a dominant, preferred or automatic response in order to perform a nondominant response, such as when a hungry person is served food at a restaurant but waits to eat until everyone at the table has been served.
Q6: Refer to Exhibit 5-11. The random variable
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Q110: Refer to Exhibit 5-8. What is the