Dear Beena

We use 3D scatterplot to see how a response variable relates to two predictor variables. It is a three-dimensional graph that is useful for investigating desirable response values and operating conditions. A 3D scatterplot contains the following elements:

• Predictor values on the x- and y-axes.

• Response values on the z-axis.

https://support.minitab.com/en-us/minitab/18/help-and-how-to/graphs/how-to/3d-scatterplot/interpret-the-results/key-results/