PSYC 3020 Study Guide - Quiz Guide: Psychological Testing, Human Hair Color, Normal Distribution
Document Summary
Chapter 5 how do users interpret test scores: levels of measurement, levels of measurement: the properties of numbers used in a test - Where there are differences in quality rather than quantity, hair color. Describes how variables can be ordered along some type of continuum rank according to gpa. Temperature in degrees no absolute zero linkertt scales, iq score. #"s assigned to arrange things in a series. #"s are an equal distance apart and there is an absolute zero point. Income, temperatures in degree kelvin, average number of cars per family. Tests yield distributions of real scores from real people. Convex at highest point, concave at 1 std above/ below mean. Most distributions of human traits form a normal curve if gathered from the entire population positive vs negatively skewed. positive left end is high. negative right end is skewed. Pg 122: interpreting test scores: raw scores, descriptive statistics: describe or summarize a distribution of test scores numerically.
