Underflow bin Check the box to create a bin for all values below or equal to the number in the corresponding box. To change this value, enter a decimal number into the box. Overflow bin Check the box to create a bin for all values above the number in the corresponding box. Number of bins Enter the number of bins for the Pareto chart (including the overflow and underflow bins). The bin width is calculated using Scott’s normal reference rule.īin width Enter a positive decimal number for the number of data points in each range. Tip: To count the number of appearances for text strings, add a column and fill it with the value “1”, then plot the Pareto chart and set the bins to By Category.Īutomatic This is the default for Pareto charts plotted with a single column of data.