If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

The legend on an Excel scatter plot is simply a list of the names for each of the series on the chart. The legend is color coordinated, so you can quickly determine which data points belong to which ...

Scatter plots are displayed for pairs of variables. Without X variables, scatter plots are displayed as a symmetric matrix containing each pair of Y variables. With a nominal Y variable, scatter plots ...

Before we learn how to perform multivariate regression in Excel, it is important to have a refresher on regression as a whole and multivariate regression in particular. One of the hallmarks of human ...