Pearsonfylgnistuðull
Pearsonfylgnistuðull, often referred to as Pearson's correlation coefficient or the Pearson product-moment correlation coefficient, is a statistical measure used to assess the strength and direction of a linear relationship between two continuous variables. It is denoted by the Greek letter rho (ρ) for the population parameter or r for the sample statistic. The value of the Pearsonfylgnistuðull ranges from -1 to +1.
A value of +1 indicates a perfect positive linear correlation, meaning that as one variable increases, the
The calculation of the Pearsonfylgnistuðull involves the covariance of the two variables divided by the product