同问。。。

同问啊，求指数QQ图和经验平均超出函数图画法？

搜一下不就有了：

A Q-Q plot is a graph that can help you decide whether your data are Normal or not. For more information on this decision, see "Assessing Normality."

To create a Q-Q plot in SPSS:

1) Open a data file (in .sav or .por format) or type your data in.

2) In either the Data Editor window or the Output Viewer window, click on the “Graphs" menu and then on "Q-Q..."

3) Select the variable(s) of interest. Click on the little arrow next to "Variables" to move the variables (one by one) into the "Variables" box.

4) Make sure it says "Normal" in the "Test Distribution" box.

5) If you would like to add a title to your plot, click the "Titles..." button. A new dialog box appears. Enter any titles or subtitles you want to use, and click "Continue..."

6) Click "OK." The Q-Q plot appears in the Output Viewer.

If the little circles follow the line pretty well, with some random scatter about the line, the data are close enough to being Normal for our purposes.

NOTE: You can create Q-Q plots in the "Explore" tool, where they are called "Normal probability plots."


http://emp.byui.edu/brownd/SPSS/Instr_Graphs/QQ_SPSS.htm

youtube上还有一步一步的视频介绍，翻过去看：

https://www.youtube.com/watch?v=YWX1fyXDII4

在Graphs菜单中已选了直方图、盒形图，还可以作QQ图，即分位数－分位数图。