For cumulative frequency graphs, it is essential to join the points rather than apply a line of best fit. This approach is due to the nature of cumulative frequencies, which do not exhibit a linear relationship with the measured data. The decision to use a linear approximation should be based on the specific analysis goals rather than arbitrary choices. Understanding the distinction between these methods is crucial for accurate data representation.
PREREQUISITESData analysts, statisticians, educators, and anyone involved in data visualization and interpretation will benefit from this discussion.