Histogram plotter
Type in values into the data box, separated by any non-numeric character and not "."
Push the format button to check if the results have been interpreted correctly
Type in the class boundaries, separarated in the same way as the data.
Push format again
When you are happy with the information, push OK
X axis label:
Data
Format
Class boundaries
10 20 30 40 50 60 70 80 90 100
Format
OK