Pearson R Test. To test if age and income are related researchers collected the ages and yearly incomes of 10 individuals shown below. Pearson s correlation coefficient r is a measure of the strength of the association between the two variables.
The first step in studying the relationship between two continuous variables is to draw a scatter plot of the variables to check for linearity. Pearson correlation coefficient also known as pearson r statistical test measures strength between the different variables and their relationships. By default the cor test function performs a two sided pearson correlation test.
The calculation of the p value relies on the assumption that each dataset is normally distributed.
The cor test function requires two inputs. Perform the pearson correlation test. The calculation of the p value relies on the assumption that each dataset is normally distributed. The code to run the pearson correlation in r is displayed below.
