PSYC 2111 Chapter Notes - Chapter 1-6: Statistical Inference, Statistic, Statistical Parameter

• School: CU-Boulder
• Department: Psychology
• Course: PSYC 2111
• Professor: D Iane Martichuski

Document Summary

1. 1- statistics, science, and observations: statistics- a set of mathematical procedures for organizing, summarizing, and interpreting information, purposes of using statistics, 1. Organize and summarize the information so the researchers can see what happened in the study and can communicate the results to others: 2. When measuring, it should be very rare to obtain identical measures for 2 different individuals b. c there can be so many possibilities: 2. 2. 2- frequency distribution tables: simplest distribution table presents the measurement scale by listing different measurement categories (x values) in a column from highest to lowest, beside each x value is the frequency (f) Grouped frequency distribution table should have about 10 class intervals: 2. Width of each interval should be relatively simple (2,5,10,20: 3. The bottom score in each class interval should be a multiple of the width: 4. All intervals should be the same width: example: 25 exam scores ranged within 42 points use a width of.