Type in up to two sets of data into the columns under the Data Sets tab. Click the wrench to sort or change the graph color. Click the Data Sets arrow to hide the data.

When choosing Single-Variable Statistics or the Stem and Leaf Plots from the left tray, the data/plot(s) show from the right. Unclick from the left to close the trays at right.

Note: Use the zoom in and out buttons at the upper right to position the histograms in a friendly window.  On a computer, you can use the mouse wheel.  On a tablet, use two fingers to pinch or spread data.