1. Sketch the graph of a histogram with 7 classes that is normally distributed.

2. Sketch the graph of a dotplot that is skewed right.

3. Construct a stemplot for the following sample data.

{33, 25, 78, 33, 38, 49, 42, 46, 63, 54, 42, 30, 42, 58, 51}

5. Use the given frequency distribution to construct the following graphs:

Time, in seconds	Frequency
10 - 11	4
12 - 13	4
14 - 15	7
16 - 17	8
18 - 19	15

a. Construct a frequency polygon for the data.

b. Construct a relative frequency histogram for the data. Label class boundaries along the horizontal axis.