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Pearson’s correlation (r) check the relationships between two or more variables; there are three types of correlations: simple correlations, multiple correlations, and partial correlations. The correlation between two variables is known as simple correlation. Multiple correlation is the correlation between three or more variables. Partial correlation – Two or more variables are involved, check the … Read More “Pearson’s correlation (r)” »

There are two types of statistical errors. Type 1 error Type 2 error Type 1 error Reject the null hypothesis when null hypothesis is true Type 2 error Fail to reject the null hypothesis when null hypothesis is false Type 1 errors are more dangerous than type 2 errors.