Plot points with coordinates where \(x\) and \(y\) are equal. Three points are sufficient, but more can be plotted. Draw a line through the plotted points. If \(x\) is positive, \(y\) is negative. If ...

While scatterplots provide a visual assessment of the relationship between variables, the correlation coefficient offers a numerical measure of the strength and direction of a linear relationship. The ...

Trend forecasting is a complicated but useful way to look at past sales or market growth, determine possible trends from that data and use the information to extrapolate what could happen in the ...