j*********r
发帖数: 200 | 1 用SPSS做一个PROJECT, 期望得到两个变量的R SQUARE的值高于0.7. 但实际上,只有0.
03.
去掉一些OUTLIERS后, 发现R SQUARE的值不升反而降到0.0008. 不明白是怎么回事,难
道去掉OUTLIERS的方法错了么? 怎么样才能提高R SQUARE 和 SPEARMAN CORRE
COEFFIENT 的值呢? 多谢! |
j*********r
发帖数: 200 | |
p********6
发帖数: 1339 | 3 单纯要增大R^2,最简单的办法是增加变量个数。另外可以调整你的回归模型。 |
j*********r
发帖数: 200 | 4 哪为什么去掉一些OUTLIERS后, 发现R SQUARE的值不升反而降到0.0008?? |
D******n
发帖数: 2836 | 5 * *
*
* *
*
do linear regression with these two clusters of points u get good R2, remove
one of them , u get bad r2, get the idea?
【在 j*********r 的大作中提到】
: 哪为什么去掉一些OUTLIERS后, 发现R SQUARE的值不升反而降到0.0008??
|
h******a
发帖数: 198 | 6 做transformation吧 不过R^2衡量的只是很小的一方面 |
B*****3
发帖数: 168 | 7 Check linearity. If not linear relationship, R2 should be small. |
P****D
发帖数: 11146 | 8 我就是进来说这个的。
【在 p********6 的大作中提到】
: 单纯要增大R^2,最简单的办法是增加变量个数。另外可以调整你的回归模型。
|
|
j*********r
发帖数: 200 | 9 It's not linear relationship. So how to build up a non-linear relationship
to increase R^2?
【在 B*****3 的大作中提到】
: Check linearity. If not linear relationship, R2 should be small.
|
j*********r
发帖数: 200 | 10 I want to identify a significant relationship between a salary ratio and
return on stocks. However there is no meaningful relationship between these
factors, R^2 value is very low by using SPSS Regression linear function.
So I am going to use SPSS NON-linear function to do the model. But SPSS
requires to "specified a function that accurately describes the relationship
between dependent and independent variables".
So can I ask how to set up a meaningful function to describe the
relationship betwe |
s****n
发帖数: 620 | 11 Do not make up a model to fit your data in social science research.
these
relationship
【在 j*********r 的大作中提到】
: I want to identify a significant relationship between a salary ratio and
: return on stocks. However there is no meaningful relationship between these
: factors, R^2 value is very low by using SPSS Regression linear function.
: So I am going to use SPSS NON-linear function to do the model. But SPSS
: requires to "specified a function that accurately describes the relationship
: between dependent and independent variables".
: So can I ask how to set up a meaningful function to describe the
: relationship betwe
|
h******a
发帖数: 198 | 12 做transformation 比如box-cox spss里面应该有现成的命令。 |
