Which of the following is NOT a recommended practice when creating scatterplots?

Connecting markers with a line in scatterplots is not recommended because scatterplots are intended to display the relationship between two variables through individual data points. Each point represents a unique observation, and connecting them could imply a sequential relationship or trend that may not be present. The purpose of a scatterplot is to allow the viewer to see the distribution and correlation of data points without misleading lines that suggest continuity or causation between discrete observations.

In contrast, clearly labeling all axes enhances the comprehension of what each variable represents, using distinct colors for different datasets can aid in differentiation when presenting multiple groups, and ensuring that data points are accurate is crucial for the integrity of the data visualized. Each of these practices contributes to the effectiveness of the scatterplot as a tool for data analysis and interpretation.