PSYB01H3 Chapter Notes - Chapter 10: Chi-Squared Distribution, Research On The Effects Of Violence In Mass Media, Statistical Power
Document Summary
Descriptive statistics: used to describe the variables in a study, both one at a time and in terms of their relations to each other. Inferential statistics: used to estimate characteristics of a population from those that were found in a random sample of that population. Can also be used to test hypothesis about the relationships between variables. Interval: numbers indicating a variable"s values represent fixed measurement units but have no absolute, or fixed, zero point. Ratio: numbers indicating a variable"s values represent fixed measuring units and have an absolute zero point. : shows the number of cases and/or the percentage of cases who receive each possible score on a variable. Guidelines for combining values in a frequency distribution: Categories should be logically defensible and preserve the distribution"s shape. Categories should be mutually exclusive and exhaustive so that every case should be classifiable in one and only one category. Displays a frequency distribution of a quantitative variable.
