[PSY 2810] - Final Exam Guide - Comprehensive Notes for the exam (42 pages long!)

• School: University of Iowa
• Department: Psychology
• Course: PSY 2810
• Professor: Mordkoff Jonathan Toby

Document Summary

Frequency tables and graphs are a good first step. Measures of central tendency gives us a further condensed form of the data. Comparing central tendency helps us interpret data. Several ways to measure central tendency central tendencies: can have more than one, the peak of the graph, this is often the only way to take an average of nominal variables/find. Mode the most common value of the variable. Median is the value of items at (n+1) / 2: if there is an even number of data points . Median is the middle of these two points halved: not the average of the first and the last, be careful when taking it from a frequency table. It can only be individual points: value can be impossible, the middle of the distribution. Mean the arithmetic center of a distribution: balance point of distribution, average, mean = total of all scores / total number of observations, same as the expected value of variable.