1. What does it mean to say that two variables are negatively correlated? (1 point)
To understand what it means for two variables to be negatively correlated, we need to understand the concept of correlation.
Correlation refers to the statistical relationship between two variables. It measures the degree to which changes in one variable are associated with changes in the other variable.
When two variables are said to be negatively correlated, it means that as the value of one variable increases, the value of the other variable tends to decrease. In other words, there is an inverse relationship between the two variables.
To ascertain if two variables are negatively correlated, you can use statistical techniques such as calculating the correlation coefficient. The correlation coefficient is a number between -1 and 1 that quantifies the strength and direction of the relationship between two variables. If the correlation coefficient is close to -1, it indicates a strong negative correlation between the variables.