PSYC209 Lecture 1: Psych 209 - Chapter 1-7 notes

• School: University of Delaware
• Department: Psychology
• Course: PSYC209
• Professor: Rachel Amey

Document Summary

Statistics: set of mathematical procedures for organizing, summarizing and interpreting information: summarize and organize, answer questions with results, communicate. Populations: a set of all individuals items or date of interest (ex. Sample sizes: a set of selected individuals items or data taken from a population of interest (state of fl: make inferences about the population. Research questions usually begin with questions about a population parameter. Researchers then use sample statistics to answer the question: parameters: value that describes a population, statistics: value that describes a sample. Sampling error: naturally occurring discrepancy (or error), that exists between a sample stat and the corresponding pop. parameter, sample stats differs from pop, sample stats vary between samples. Continuous: discrete: separate, indivisible categories (ex. weight = 120, 140 lb) (ex. number of siblings, number of students in a class, class rank, continuous: infinite number of possible values between any two observed values (ex. weight = 120. 42 > infinity lb) (ex. height, temperature, gpa)