Psychology 1000 Lecture Notes - Lecture 11: Standard Score, Standard Deviation, Frequency Distribution

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Frequency distribution how many times the particular number was achieved. If mean median mode are similar or equal, overall shape can be determined by dispersion. Mean (xbar); m add up numbers and divide by n (total number) Same value can be obtained with a variety of scores. Degree of fluctuation of scores around the mean. Some distribution have high variance, others are relatively low. Z = (score mean) / standard deviation. Z-scores are normally distributed with a mean of 0 and s=1. 96% distributed between -2 and +2 (14% from 1 sd) Simplify by looking at frequency, mean, median, mode. Shape influenced by spread of range and variance.