PSY-380 Lecture Notes - Frequency Distribution, Bar Chart
Document Summary
Symmetrical distributions: distribution in which one side is a mirror image of the other. Positive skew: distribution where the tail point toward the right end of the x-axis. Negative skew: distribution where the tail points toward the left end of the x-axis. Frequency distribution: organized tabulation number of individuals located in each category on the scale of measurement. f = frequency. Grouped frequency distribution table: graph presenting groups of scores rather than individual values. Class interval: a group of scores in a grouped frequency distribution table. Apparent limit: value that appears to form the upper and lower boundaries for the class interval. Histogram: graph with a bar drawn above each with no space between adjacent bars. Is good for numerical frequency or scores on a ratio score of measurements. When data are on an interval or ratio scale. Polygon: graph with a dot centered above each score according to the frequency of each score.
