All Questions
8 questions
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Is the intercept of a complex sum-coded regression basically useless for interpretation? Maybe even for some simple models?
In regression analysis, one may choose to code categorical variables differently depending on interpretability considerations. One such coding scheme known as sum coding (a kind of effect coding ...
- 262
0
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0
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793
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Missing outputs or coefficients from multiple linear regression?
I have a multiple linear regression I have completed below:
...
- 155
1
vote
1
answer
81
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What is the correct way to test multiple dummies?
I'm discussing a topic with classmates and the textbook does not address our concerns. In the following model:
$$wage = \beta_0 + \beta_1 female + \beta_2 educ + \beta_3 (female \times educ) + u$$
it ...
- 127
2
votes
2
answers
386
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Interpreting the coefficients of indicator variables in regression equation without indicator term
Suppose we were trying to estimate the impact of $Size$ of a house on its price while controlling for whether or not the house is located by the water. Suppose we constructed a dummy variable for ...
- 239
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2
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36
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Methods or processes for discovering the major reasons for linear regression coefficients?
Other than inspecting data at random, what are some statistical or graphical processes or methods for determining the major reasons for coefficients in linear regressions?
Example
Suppose we have ...
- 303
1
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99
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Interaction term btw. binary and continuous variable - dropping the intercept? [closed]
I run a linear regression with many dummy variables (in total 10). Thus to avoid the dummy variable trap, I dropped the intercept and included all dummy variables.
Now I'd like to have a look at the <...
- 11
1
vote
1
answer
58
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Multiple regression with a odd-numbered Likert items
In the questionnaire, individuals were asked to pick from an odd number of options (5 or 7) how much they agree with the statement (from completely agree to completely disagree).
Now, if there where ...
- 111
1
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1
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Interpretation of dummies (several variables and categories!)
I am trying to figure out how to interpret the coefficients when using several qualitative independent variables of which some have more than two categories. I found this short article that touches ...
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