PSY 1101 Lecture Notes - Lecture 3: Explained Variation, Normal Distribution, Falsifiability

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Kenneth Campbell

Document Summary

Perfectly balanced normal curve the mean median and mode are all the same. There are almost always individual differences in the dependent measure, some high, some low. 68% within 1 s. d of the mean 96% within 2 s. d of the mean. A change in one variable is also associated with a change in another (ex. Correlation- a statistical measure if the extent of a relationship between 2 variables. Allows one to predict scores on one variable if the scores on another variable are known. The larger the correlation the stronger the ability to predict. Every scientific theory must be potentially falsifiable. Based on theory, scientists form a hypo/prediction. The null hypothesis; assuming something is false until proven otherwise. Experimental manipulation: the experimenter manipulates the independent variable. Thus might cause the dependent variable to vary. Social modelling theory: reinforced by mimicking our peers (we model what we consider to be popular)