Give a two-word answer. It can be calculated by multiplying the differences between corresponding members of two sets and their means and then dividing the sum of those numbers by the square root of the sums of the products of the same differences squared.
Give a two-word answer. It can be calculated by multiplying the differences between corresponding members of two sets and their means and then dividing the sum of those numbers by the square root of the sums of the products of the same differences squared. Another way to calculate it involves dividing by the product of the standard deviations. It often gets squared so that statisticians can focus on its magnitude rather than its direction. It always has a value between negative one and positive one, and a value of zero means that no linear relationship exists between two sets of data. Give the name of this value, which often is represented by a lower case r.
Give a two-word answer. It can be calculated by multiplying the differences between corresponding members of two sets and their means and then dividing the sum of those numbers by the square root of the sums of the products of the same differences squared.
Correlation Coefficient