Support a conclusion by saying what the graph shows, such as if there is a relationship between the two variables. A good way of describing the relationship is to say what happens to one variable ...

Pearson’s correlation is a commonly used statistical technique for investigating the strength and direction of the relationship between two quantitative variables, such as the relationship between age ...

Correlation measures the relationship between two variables. Learn how to calculate the correlation coefficient between market indicators and stock prices.

Calculating the Pearson correlation coefficient can be complicated but software makes it much easier. You can use several methods to calculate correlation in Excel.

First, it is not a simple comparison of just two elements as you would find in a bar chart, or numbers over time as in a line graph. The scatterplot plots two variables in relationship to each other.

In this article, we will explore the theory, assumptions and interpretation of Spearman’s rank correlation, a flexible statistical tool that assesses the strength and direction of the relationship ...

Learn how to interpret graphs and use them to come to conclusions about the relationship between two variables.