The data must include a pair of columns of numeric data
The pair of columns must have the same number of rows. The data can also include an additional numeric column that Minitab uses to color the bins.
The sample size should be large
Although there are no formal guidelines for the amount of data needed for a binned scatterplot, larger samples more clearly indicate patterns in the data. A binned scatterplot works well with thousands of rows of data.
The sample data should be selected randomly
In statistics, random samples are used to make generalizations, or inferences, about a population. If your data were not collected randomly, your results may not represent the population.
Record data in the order it is collected
Usually, you should record the data in the worksheet in the same order that you collect it. Then, you can evaluate time-related patterns in the data.