<p> Chapter 3 – Frequency Distributions Know and Be Able To Do</p><p>1. You should be able to define a frequency distribution and tell why it is a useful type of descriptive statistic.</p><p>2. You should be able to discuss ungrouped and grouped frequency distributions, stating advantages and disadvantages of each.</p><p>3. Given the raw scores and the number of intervals, you should be able to construct a frequency distribution of grouped scores</p><p>4. You should be able to define and construct relative frequency distributions, cumulative frequency distributions, and cumulative percentage distributions.</p><p>5. You should be able to define and compute a percentile or percentile point.</p><p>6. You should be able to define and compute the percentile rank of a score.</p><p>7. You should be able to describe the four main types of graphic representation of frequency distributions – the bar graph, the histogram, the frequency polygon, and the cumulative percentage curve.</p><p>8. You should also understand how to construct and when to use each of the four main types of graphics representations of frequency distributions.</p><p>9. You should be able to define “symmetrical” and “skewed” and recognize instances of each.</p><p>10. You should be able to recognize, understand, and construct a stem and leaf diagram.</p><p>11. You should understand and be able to define the terms in the “Important Terms” section of this chapter.</p><p>12. You should understand the illustrative examples.</p><p>13. You should be able to do the practice problems.</p>