The number of patents a university receives is an indicator of the research level of the university. From a study titled Science and Engineering Indicators issued by the National Science Foundation, we found the number of U.S. patents awarded to a sample of 36 private and public universities to be as follows.

Construct a stem-and-leaf diagram for these data with
a. One line per stem.
b. Two lines per stem.
c. Which stem-and-leaf diagram do you find more useful? Why?

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93 27 1 30 9 30 35 20 9 35 24 19 14 29 11 2 55 15 35 2 15 4 16 79 16 22 49 3 69 23 18 41 11 7 34 16