korreationskoefficient
The correlation coefficient is a statistical measure that quantifies the strength and direction of a linear relationship between two quantitative variables. It is represented by the Greek letter rho ($\rho$) for a population or 'r' for a sample. The value of the correlation coefficient ranges from -1 to +1.
A correlation coefficient of +1 indicates a perfect positive linear relationship, meaning that as one variable
The most common type of correlation coefficient is Pearson's correlation coefficient, which measures the linear association
It is important to note that correlation does not imply causation. A strong correlation between two variables