COMM 2002 Lecture : Semester 1 - Nov 11, 2013 - Bivariate Analysis - Ordinal Measures.docx

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

Document Summary

The nature of the relationship: what is the direction of the relationship positive or negative, how strong is the relationship. Correlation coefficient, 0-. 25 is weak, . 26-. 50 is a medium relationship, above . 50 is a strong relationship. Expected values multiplying the row totals multiplied by the column totals and dividing by the sample size. Ordinal strength measures: the measures use the ordering of the categories in making their calculations, they are based on a comparison of all pairs of cases. Each case with each other: pairs are either concordant (c), discordant (d), or ties (t, basic formula = n(c) n(d) Spss will compare one variable with another and decide if its concordant, discordant or ties. Concordant has a positive relationship, discordant has a negative relationship and ties void the relationship completely. If more pairs are concordant than discordant the measure will be positive. If more pairs are discordant than concordant the measure will be negative.