Frequency distribution

Frequency Distribution

•A frequency distribution provides an overview of the entire group of scores making it easy to see the general level of performance for each type of sentence.

• A frequency distribution is an organized tabulation of the number of individuals located in each category on the scale of measurement.

•It can be structured either as a table or as a graph, but in either case, the distribution presents the same two elements:

•1. The set of categories that make up the original measurement scale.

•2. A record of the frequency, or number of individuals in each category.

characteristics

•There are three characteristics that

•completely describe any distribution: shape, central tendency, and variability.

•In a symmetrical distribution, it is possible to draw a vertical line through the middle so that one side of the distribution is a mirror image of the other (Figure 2.11).

•In a skewed distribution, the scores tend to pile up toward one end of the scale and taper off gradually at the other end