[求助]怎样做指数QQ图

是 否 +2 论坛币

k人 参与回答

经管之家送您一份

应届毕业生专属福利!

求职就业群

赵安豆老师微信：zhaoandou666

经管之家联合CDA

送您一个全额奖学金名额~ !

立即领取

感谢您参与论坛问题回答

经管之家送您两个论坛币！

+2 论坛币

向各位兄弟姐妹请教一下，文献中经常提到的指数QQ图或QQ散点图怎样做啊？谢谢了

扫码加我 拉你入群

请注明：姓名-公司-职位

以便审核进群资格，未注明则拒绝

分享0 收藏0 回帖

关键词：兄弟姐妹 散点图 散点图

同问。。。

同问啊，求指数QQ图和经验平均超出函数图画法？

猪猪O(∩_∩)O~ 发表于 2014-11-8 16:13
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。

还是没能明白如何做指数QQ图，我看一个轴是关于数据的分位数，另有一个轴是正态分布的值么？
谢谢!