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## Tutorial: Descriptive Statistics Example

This example shows you how to open an existing data set, display descriptive statistics on a single variable, and display a histogram. After starting the WINKS program, follow these steps:

Step 1: Select the file named EXAMPLE.SDA. (Choose File/Open Data Set  from the menu.) Once the file opens you will see the data in the data grid:

Step 2: To perform a Descriptive Statistics analysis on this data select Analyze, Descriptives, Detail/One Variable. A dialog box appears where you can choose a field name. First click on the checkbox labeled “include stem and leaf plot?” Click on AGE, and Ok, as shown in the following dialog box.

Step 3: A dialog box is displayed allowing you to specify options for the Stem and Leaf plot. Click on the checkbox labeled “Split stem leaf value in half.” Click Ok.

Step 4: The output contains descriptive statistics from the data in the AGE field. Scroll this window to view all of the output.

Note: The “Tukey Five Number” output will differ slightly if the “Display outliers” option was selected in the Setup options (Help/Change Setup Options.)

Step 4: To display a graph of the data select Graph/Display Graph.  A screen appears showing a histogram of the AGE data. Select Edit/Display Normal Curve to add a bell curve (normal curve) to the graph.  The graph is shown below:

Step 5: To combine the graphic and text output, first select Edit/Copy to clipboard while viewing the graph. Then select File/Exit to return to the text output. Place your cursor at the end of the output and select Edit/Paste. The graph is pasted at the end of the output file. Size the graph by clicking on it. Sizing buttons appear at each corner. Click and drag on one of the sizing buttons to make the graph smaller.

Step 6: You can now print the output including the graph, or select Edit/Select all and Edit/Copy then paste the output into a word processor.

Step 7:

For help on performing other tasks in WINKS, click on the "?" Help button to display the Help Menu.

The Help menu contains numerous examples -- virtually every analysis type in WINKS has a step-by-step example you can perform.

To use the Help system, select an analysis topic from the index on the left side of the Help screen. Most topics in the Help system include an explanation and an example. The easiest way to learn how to perform an analysis is to look it up in Help, print the topic, and perform the example. Then, use the example to build an analysis using your own data.

Step 9: We recommend that you do the tutorials in the Getting Started Guide to learn about using WINKS -- spend 15 minutes with these tutorials and you will know most of what you need about WINKS to do most analyses.

For more help using WINKS, go to the WINKS Support Page.

WE RECOMMEND
Get the WINKS SDA laminated 8.5 x 11" 3-hole punched "BeSmartNotes" notes -- very helpful!

Purchase BeSmartNotes Reference sheets at the TexaSoft on-line store.