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FREQUENCY DISTRIBUTIONS (850 words) |
 | Relative is the term used to indicate that the percentages or proportions are used in addition to the number of cases. |
| A histogram is a pictorial representation of a frequency distribution in which the scores (X) are plotted on the X-axis of a graph and the frequency (or relative frequency) of occurrences is plotted on the Y-axis. |
| A frequency polygon is a pictorial representation of a frequency distribution in which the scores (X) are plotted on the X-axis of the graph and the frequency (or relative frequency) of occurrences is plotted on the Y-axis. |
| Probability Definitions (797 words) |
| The relative frequency of an event E is defined as the proportion of n trials which result in E. If the number of trials n is large, the proportion of trials resulting in E is a good estimate of the true probability that E will occur. |
| Exercise #1 demonstrates the relative frequency and a priori definitions of probability using an urn with 10 balls. |
| Exercise #2 demonstrates the relative frequency and a priori definitions of probability using an urn with 100 balls. |
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