Refer to Exercise 1.19.
Exercise 1.19
A discrete variable can take on only the values 0, 1, or 2. A set of 20 measurements on this variable is shown here:

a. Draw a dotplot to describe the data.
b. How could you define the stem and the leaf for this 4data set?
c. Draw the stem and leaf plot using your decision from part b.
d. Compare the dotplot, the stem and leaf plot, and the relative frequency histogram (Exercise 1.19). Do they all convey roughly the same information?

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