Psych 331 Questions and Answers 2024

Descriptive Statistics - Correct Answer Describe, summarize, and tabulate the data Frequency Distribution - Correct Answer An arrangement of data that indicates how often a particular score or observation occurs. Cumulative Frequency - Correct Answer a running total of frequencies Apparent Limits - Correct Answer the score values that appear as the lowest score and the highest score in an interval Real Limits - Correct Answer Boundaries of intervals for scores that are represented on a continuous number line Cumulative Percent - Correct Answer The relative frequency corresponding to sum of the frequencies for that category and for all categories below it. Abcissa - Correct Answer x axis Ordinate - Correct Answer y-coordinate Histogram - Correct Answer A graph of vertical bars representing the frequency distribution of a set of data. -bars touch implying intervals Frequency Polygons - Correct Answer a graphic display of a frequency distribution in which the frequency of each score is plotted on the vertical axis, with the plotted points connected by straight lines Bar graph - Correct Answer a type of graph in which the lengths of bars are used to represent and compare data in categories - no continuity of data is implied Stem and Leaf Plots - Correct Answer a method of graphing a collection of numbers by placing the "stem" digits in one column and the "leaf" digits out to the right Percentile Rank - Correct Answer Percentage of scores falling at or below a specific score. Left Skew - Correct Answer negative (skew) Right Skew - Correct Answer positive (skew) Platykurtic - Correct Answer A curve or distribution of scores that has a lot of variance - flatter than normal distribution