Solution

 Given:

1, 2, 1, 0, 2, 2, 1, 1, 0, 0, 2, 2, 1, 1, 0, 0, 1, 2, 1, 1

(a) $\textbf{Dotplot}$

Create a number line

For every given data value place a dot above the corresponding number on the number line.

(b) We could choose the data values to be the stems, while the leafs are a 0 (representing the tenths of the data values).

The dotplot, the stem and leaf plot and the relatively frequency histogram all convey the same information, because they all show frequent each of the data values are.

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