Psychology 1000 Chapter Notes - Chapter Appendix: Null Hypothesis, Statistical Inference, Statistical Significance

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Laura Fazakas- De Hoog

Document Summary

Our goal is to help you understand discusses how psychologists use statistics in their. Psychological research often involves a large number of measurements. It is difficult to make sense of the data merely by examining the individual scores of each participant. Descriptive statistics summarize and describe the characteristics of a set (also called a distribution) of scores. To summarize of set of scores, we might first construct a frequency distribution, which shows how many participants received each score. Note that researcher chose to use intervals of three points (e. g. 30 32) rather than to show the number (frequency) of participants who obtained each of the 33 possible (0: scores. The number of intervals chosen is somewhat arbitrary, but frequency distributions often contain 10 to 12 categories. This frequency distribution tells us at a glance about certain characteristics of the data, whether scores tend to cluster in one region of the distribution or are scarred throughout.