The statistical-control tag has no wiki summary.
7
votes
3answers
95 views
What is the link between methods such as matching and statistically controlling for variables?
Often in research articles you read the researchers have controlled for certain variables. This can be done by methods such as matching, blocking, etc.
But I always thought controlling for variables ...
5
votes
3answers
527 views
2
votes
1answer
44 views
How to control for a variable
The goal of the analysis is to find a correlation between birth context and stature, while controlling for age.
Each person has an ID number, age, stature, and birth context. That last part is what ...
1
vote
1answer
53 views
Dividing controls between two groups of cases
I have a set of data that contains cases and controls. I would like to divide the cases by a particular phenotype before running my tests, to see how these groups differ (but not necessarily to ...
1
vote
1answer
160 views
What if only control variables are significant in a differences-in-differences analysis?
Regarding the standard DID model:
$$
y=\alpha+\beta_1\text{treat}+\beta_2\text{post}+\beta_3\text{treatâ‹…post}+u
$$
What exactly does it mean if say $\beta_3$ is not statistically significant, but ...
1
vote
1answer
160 views
Interpreting Omitted Variables
I do not fully understand how to interpret the difference between two statistical models where they only differ based on whether a certain variable is included on the right hand side.
If the results ...
0
votes
1answer
81 views
Partial correlation
I want to create a regression model to predict state crime rate. There are two variables among 10 ( Vi= # of violent crimes per 100,000 population, Vi2 = # of violent crimes per 10,000 population) ...
0
votes
0answers
33 views
Too many controls?
I am purposely keeping this question vague since this has happened to me with multiple datasets. I have a DV and a few IV then several controls, and all looks fine. Then I add one more controls and ...
0
votes
2answers
32 views
How to determine influence of two time series with feedback?
Say you have two time series, A & B. Each have a mutual effect on the other. To give a real-world example, say that time series A measures an artist's CD sales per month, and time series B is some ...
0
votes
0answers
47 views
controlling for a highly correlated variable
In a paper looking at hand movements and time taken to complete a task it appears that the ratio of movements over time is constant (i.e., movement and time are highly correlated) yet they say in the ...
