PSYC1003 Lecture Notes - Lecture 9: Scatter Plot, Rho, Null Hypothesis
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The correlation coefficient: a statistic that quanti es how related two variables are, e. g. , pearson product-moment correlation (pearson"s r, it measures works by seeing how much the two variables vary (i. e. , move or change ) together. We can quantify how related two variables are, using a correlation coe cient. The correlation coe cient measures this relationship by estimating how much the two variables vary (i. e. , move or change ) together. The most commonly used of these is the pearson product- moment correlation (pearson"s r) Pearson"s r is a number between -1 and +1. The sign indicates whether the relationship is negative or positive. The closer the number is to 1 (ignoring the sign), the stronger the relationship > the correlation coe cient measures the strength of the relationship between two variables. As a measure of the strength of the relationship between. 2 variables ohow strong is the relationship between these variables o2.
