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Correlation Between Continuous & Categorical Variables

Correlation Between Continuous & Categorical Variables CIVL 7012/8012. 2. Association Between Variables Continuous and Continuous variable Pearson's Correlation coefficient Categorical and Categorical variable Chi-square test Cramer's V. Bonferroni correction Categorical and Continuous variable Point biserial Correlation 2. Association Between Continuous Variables Compute Pearson's Correlation coefficient (r). r< , weak Correlation <r< , moderate Correlation r> , high Correlation 3. Association Between Categorical Variables Pearson's Correlation coefficient can not be applied. What are some of the methods How to compute them What will be the conclusion 4.

– a continuous random variable Y and – a binary random variable X which takes the values zero and one. •Assume that n paired observations (Yk, Xk), k = 1, 2, …, n are available. – If the common product-moment correlation r is calculated from these data, the resulting correlation is called the point-biserial correlation.

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