PSY 110 Lecture Notes - Lecture 2: Normal Distribution

• School: University of Miami
• Department: Psychology
• Course: PSY 110
• Professor: Roderick Gillis

Document Summary

The field of statistics can be divided into 2 branches: descriptive and inferential. Descriptive statistics summarizing large amounts of data into a form that is easily interpreted. Range (difference between highest and lowest score) The extent to which the scores in a distribution vary from the. Much more accurate than range because it takes all scores. Calculating standard deviation into account, rather than just the highest and lowest. Work out the mean (the simple average of the. Measures how far a score deviates from the average. (sample score mean score) /( standard deviation) In a normal distribution, 68% of people fall between -1 and +1. In a normal distribution, scores are distributed similarly on both sides of the middle value, so they appear bell-shaped when graphed. 34, 14, & 2 (memorize these for test?) A correlation has 2 qualities: direction and magnitude. Inferential statistics using statistical procedures to draw conclusions about the meaning of data. a few inferential tests are: