Image caption, Plot each ... 5 minutes. The scatter graph shows the relationship between the temperature on a given day and the number of ice creams sold in a café. A line of best fit has been ...

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.

Thus these researchers decided to explore if a group of Guinea baboons (Papio papio) possessed this ability using “a binary task of trend judgment over scatterplot ... linear regression on a graph?