Psychology 1000 Chapter Notes - Chapter Appendix: Frequency Distribution

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

Document Summary

Descriptive statistics summarize &describe the characteristics of a set of scores. Frequency distribution shows how many participants received each score. Measures of central tendency a distribution in terms of a single statistic that is in some way typical of the same as a whole o. Mode the most frequently occurring score in a distribution: not representative score because it can fall far from the centre. Mean represents the arithmetic average of a set of scores (average) o. Can be skewed by any extremely high or low scores. Measures of variability provide information about the spread of scores in a distribution. Range the difference between the highest &the lowest score in a distribution is the simplest but least informative measure of variability. Variance the average of the squared deviation score about the mean. Normal curve a symmetrical bell-shaped curve that represents a theoretical distribution of scores in the population.