COMM 2002 Study Guide - Midterm Guide: Chi-Squared Test, Null Hypothesis, Contingency Table

• School: Carleton University
• Department: Communication Studies
• Course: COMM 2002
• Professor: Heather Pyman

Document Summary

Categories with no relationship to each other except that they(cid:495)re different: ex) jewish, catholic, no religion. Different categories can be ranked: ex) always, usually, rarely. Values take form of numbers: ex) 1,2,7. 5. Interval: outliers: extreme values at either end of the range. Middle point in the range of values. Summarizes the amount of variation in a sample. Difference between the min and max value. To use the equation: take the difference between each value in a distribution and the mean, squaring it, dividing the total of the differences by the number of values, then taking the square root. Examines whether there is a relationship between 2 variables. Displays the number and or percent of units in different categories of a variable. Analyzes 2 variables to see their relationship. Statistic used to examine relationship between 2 interval variables. Features: coefficient has values from 0 to +1 or 1 or -1.