PSYC 3000 Study Guide - Midterm Guide: Null Hypothesis, Scatter Plot, Normal Distribution

• School: Carleton University
• Department: Psychology
• Course: PSYC 3000
• Professor: Deanna C Whelan

Document Summary

It is a way of measuring the extent to which two continuous variables are related (association, link, relationship) Each participant needs a score on each of the different variables (to make a dot on a scatterplot) It measures the pattern of responses across variables. Helps us understand the association between 2 continues variables. We need to see if as one variable increases, the other increases, decreases or stays the same. Steepness of slope does not determine correlation, its the dots and their proximity to each other. Has an r-value and an associated p-value. It is an effect size so we can talk size" of association, how big/strong is the association. Spss is converting the r to a t and then using the t-table. The t is testing the null hypothesis that the correlation in the population is zero. Our interpretation of the p-value is still about the population, relation between the two variables within the population.