PSYC 201W Chapter Notes - Chapter 14: Categorical Variable, Central Tendency, Normal Distribution

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 201W
• Professor: Rose Vernon

Document Summary

Introduction: descriptive statistics: the type of statistical analysis focused on describing, summarizing or explaining a set of data, inferential statistics: the type of statistical analysis focused on making inferences about populations based on sample data. Descriptive statistics: data set: a set of data where the rows are cases and the columns as variables, start with a data set. Frequency distributions: frequency distribution: data arrangement in which the frequencies of each unique data value is shown. Continuous or quasi-continuous dv: central tendency and variability, mean. Frequency and categorical data (nominal variables: counts, percentages and proportions rather than freuquencies. Bivariate data: two continuous variables, do the variables vary together and how they are related. In a graph when things are changed from fruencies to. Examining relationships among variables: psychologist are often interested in the relationship between an independent and a dependent variable. Contingency tables: contingency table: a table used to examine the relationship between categorical variables.