PSY201H1 Lecture Notes - Lecture 2: Unimodality, Percentile Rank, Frequency Distribution
Document Summary
These can be easily represented with frequency distributions. Frequency distributions can be graphs or tables with key elements: Representing the categories/values on the measurement scale (ie all the possible scores/ranges of scores) Representing the frequency of each score/range (ie the number of people who have that score) Without skipping any values (ie frequency might be 0, but still included) Column for f (frequency) of each x (how many people have that score) Sum of frequencies across all scores should = n or n. *real limits in frequency distribution (refer to slide 10 and last week) note prof has said that text uses discrete variables and so unless specified tests will contain discrete variables. Are common form of graph used to represent a frequency distribution. Plot values of a continuous variable along the x axis. Plot frequency of each value up y axis. Could alternatively represent with a polygon (note: bar graphs are used for discrete variables)
