All Questions
Tagged with sas hypothesis-testing
11
questions
1
vote
1
answer
46
views
2-way Anova on Unequal Group Proportions
I’m working on a dataset collected from a 2-way Anova design (kind of) on binary data. The purpose of the experiment is to explore how different types of email marketing incentives affect customers ...
- 11
2
votes
1
answer
41
views
Identifying groups with better response to treatment
We have tested a population (splitted in test 50% and control 50%) with a treatment. Overall, the treatment was effective - our test variable was significantly different in the treatment and control ...
- 21
0
votes
2
answers
1k
views
Binary independent variables with missing values. Create dummy variables or not?
I am developing a prognostic model to predict an outcome. I have few binary variables with missing values, see below example. Is it better if I create dummy variables out of the below Gender variable ...
- 141
5
votes
2
answers
68
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How can I verify the linear hypothesis in a multiple logistic regression using SAS? [closed]
I have a multiple logistic regression where 2 of my independent variables are continuous. The rest are dichotomous. I am supposed to verify the linear hypothesis for the continuous variables. Is there ...
- 55
2
votes
0
answers
39
views
Determining an appropriate analysis approach
I have data (that can be seen at the end of this post) in which 13 judges scored differing amounts of posters. Judges are randomly assigned blocks of poster numbers to score. We can assume poster ...
- 1,802
3
votes
0
answers
884
views
Detecting collinearity in Logistic Regression model
I'm running a predictive model using the logistic model in SAS and, currently, I'm trying to perform some diagnostics about the collinearity issue in the estimated model.
To do that, I followed step-...
- 345
2
votes
0
answers
262
views
White test confirms heteroskedasticity while Breusch-Pagan test doesn't [duplicate]
I'm using SAS in order to create a model for a cars datasets. The response variable y, is the price of the car. By the way I'm using the PROC MODEL statement in order to check heteroskedasticity. This ...
- 21
2
votes
2
answers
2k
views
How to test if my data fits a uniform distribution with SAS?
I have a target variable with upper and lower natural limits (cannot be negative and can not be bigger than 100). Therefore, I would like to know if I could use ...
4
votes
1
answer
351
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Wald test and Type III test don't agree?
I am having trouble understanding the output here. In the green table, it seems like SAS is saying "Gender F" and "Gender M" are not significant. However, in the blue table, seems like it's saying ...
- 1,716
2
votes
1
answer
2k
views
Too many p-value less than 0.0001 is alarming?
Can anyone explain why having too many p-value less than 0.001 is alarming? Like what happens to my model right now:
All independent variables are categorical except for Calendar_Year. There are ...
- 1,716
12
votes
3
answers
1k
views
Using computer simulations to better understand statistical concepts at the graduate level
Hi I'm taking a graduate course in Statistics and we've been covering Test statistics, and other concepts.
However, I am often able to apply the formulas and develop a sort-of intuition on how stuff ...
- 2,045