PSY 3213L Lecture Notes - Lecture 12: Likert Scale, Frequency Distribution, Central Tendency

• School: University of Florida
• Department: Psychology
• Course: PSY 3213L
• Professor: Melissa Cervantez

Document Summary

Chapter 12: understanding research results (description and correlation) Interval scale: difficult to tell when an ordinal or an interval scale is being used, the intervals between the levels are equal in size. Likert scale: ratio scale, equal intervals and an absolute zero, conceptually different from interval scales but stats analyzes them the same way, time, weight. Frequency distributions: can get the mean responses of participants in two or more groups. Frequency polygons: use a line to represent the frequencies of scores best for interval or ratio scales, histograms, uses bars to display a frequency distribution for a quantitative variable. Scale values are continuous so ranges are used: descriptive statistics, allow researchers to make precise statements about the data, central tendency, variability, central tendency. Line- used when the values on the x axis are numeric: two ways to graph the same data, correlation coefficients: describing the strength of relationships, correlation coefficient.