A dotplot is usually the easiest frequency graph to construct by hand.

Applet: Easiest case dotplot ||| Medium case dotplot ||| Advanced case dotplot

Easiest: Watch a dotplot being formed from whole-number values.

For all types of frequency graphs, sometimes data needs to be combined into appropriate-sized units to make the graph look reasonable. One of the simplest ways to do that is by rounding.

Medium: Watch values with decimals being rounded to whole numbers and a dotplot being made.

Advanced: Watch values being rounded in several different ways and compare the resulting dotplots to see which looks most useful.

(How do dotplots build on previous ideas from math class? See individual value plots.)

Information about entering data for our applets (Only the advanced applet here allows you to enter your own data.)

Home | Overview of Frequency Graphs

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