Tools to rearrange and edit data
Tools to help with onevariable numerical summaries
Sort the data (smallest to largest)
Onevariable summary statistics
Understanding the standard deviation:
See the standard deviation numerically
Estimate the standard deviation from a graph

Onevariable graphics toolkit:
Simplest:
Explore these types of graphs:
See examples of various types of graphs of onevariable numerical values. Various choices are provided. Experiment with some of them. See instructions for how to experiment at the end of this page.
How different can different samples from the same distribution look?
To start each of the four types of graphs: individual data plots, dotplots, stemandleaf plots, and histograms,
 Click on "Random Values" and choose 25.
 Then you'll see various options for the graph. Just use what is originally selected.
After you see how each works, then start experimenting with changing the settings for the graph without changing the values.
When you are ready, enter data values you have, if you wish.
 Delete everything from the textbox with the values,
 "Copy and paste" your data values into the box.
Caution: Not all graphs produced here are "good" graphs. Some have too few "bins" and some have too many "bins." One of the purposes of this website is to enable you explore various choices and develop an "eye" for how to produce useful graphs for a given set of data.

