18. For the following set of scores:

Scores: 2, 3, 2, 4, 5, 2, 4, 2, 1, 7 1, 3, 3, 2, 4, 3, 2, 1, 3, 2

a. Construct a frequency distribution table.

b. Sketch a polygon showing the distribution.

c. Describe the distribution using the following characteristics:

(1) What is the shape of the distribution?

(2) What score best identifies the center (average)

for the distribution?

(3) Are the scores clustered together, or are they spread out across the scale?