1. Use the data set below to complete the frequency table: 13, 18, 17, 19, 15, 14, 18, 16, 20, 18, 14, 17, 15, 19, 18, 14, 16, 13, 20, 15 (a) Create a frequency table with 5 classes. Include class limits, frequencies, relative frequencies, and cumulative frequencies. (b) What is the class width? Show your work. (c) What are the lower and upper class limits of the second class? (d) What percentage of scores fall into the third class? 2. Use your table to construct a histogram on graph paper or a separate sheet. Be sure to: - Label the axes clearly - Include a title - Make sure bars are touching 3. Describe the shape of your histogram. Is it symmetric, skewed left, or skewed right? 4. Why do histogram bars touch while bar graph bars do not