All Questions
7
questions
1
vote
1
answer
115
views
Multiple Linear regression unmet assumptions, what can I do?
I need your help with some work I am doing.
Some context first:
I am writing a dissertation for my master. The topic is about perceived trust in Smart Home technology. I launched a survey with a ...
- 21
0
votes
1
answer
113
views
Nonparametric Regression
Suppose I have response y, continuous independent variable x and binary variable z.
...
- 357
1
vote
0
answers
179
views
Non-parametric test for interaction of two continuous variables on a third continuous variable
I have two continuous variables a and b and I would like to test whether they non-linearly interact to affect a dependent ...
- 203
8
votes
6
answers
4k
views
Dealing with non-normal distribution in "big" datasets, when do we throw out the CLT?
Apologies from the go as this question comes from an absolute newbie and will definitely not satisfy a lot of the detail required. Hence, your guidance in providing you the right information to allow ...
- 458
1
vote
1
answer
461
views
Multiple regression of nonparametric variable over different types of variable
I have a non normally distributed variable X (also its residuals are non-normally distributed). I have also two predictor variables, one categorical (two categories) and one discrete. Which regression ...
- 265
0
votes
1
answer
509
views
Modeling a outcome variable heavily skewed toward 0
I am working with a data set to model student performance with numerous variables from the class/school/district/provincial level. Student performance is extremely low though -- 70% of reading ...
10
votes
4
answers
10k
views
When to use non-parametric regression?
I am using PROC GLM in SAS to fit a regression equation of the following form
$$
Y = b_0 + b_1X_1 + b_2X_2 + b_3X_3 + b_4t
$$
The QQ plot of the resulting redsiduals indicate deviation from ...
- 415