# Tagged Questions

105 views

### Significance testing for different groups in multiple regression with dummy-coded interaction variables

Consider a multiple regression predicting outcome Y using a continuous predictor P and an interaction between ...
30 views

### how to evaluate the importance of different levels of one predictor

This question is a little bit different. Say, I have 4 predictors (all categorical variables with multiple levels), and 1 response variable (binary 0/1). I used a logistic regression model, and found ...
82 views

### Appropriate statistics for proportions where categories are composites of independent binary variables?

I have data in the form of three digit binary numbers (i.e. 100, 101, etc.) scored for each individual in my samples taken from two populations I wish to compare. The three numbers represent ...
91 views

### Regression - significance of a variable

I have been running a linear regression, and one of the variables was a discrete variable (3 categories), decoded into three binary variables. I ran the regression in Stata. The first of those three ...
150 views

### Dummy's, significant and not significant

I have in my model two dummy's, for a categorical variable with 3 categories (native, EU-immigrant and non-EU-immigrant). The reference category is 'native'. These are merely control variables. Now ...
225 views

### Testing statistical significance of male vs female enrolment preference percentages between two different fields of education

The problem I have is as follows. I have enrolment data describing the number of male and female preferences for two broad fields of education: i) Information Technology and ii) Engineering. The ...
138 views

### Which one consider when dealing with dummy variables: Exact Sig. (2-sided) or Exact Sig. (1-sided)?

I'm running a cross tab of one categorical variable against a dummy variable. This dummy variable indicates the presence or absence of a company characteristic(if the company is industrial it should ...
336 views

### Comparing observed data to simulated data?

I have a set of observed values (shown with black dots in the figure) that I would like to compare to some simulated data (100 simulated datasets shown as box plots with quartiles, extremes (excluding ...
1k views

### How to test the statistical significance for categorical variable in linear regression?

If in a linear regression I have categorical variable... how do I know the stastical signifance of the categorical variable? Let's say the factor $X_1$ has 10 levels... there will be 10 different ...
292 views

### Characterizing datasets and estimating statistically significant differences?

I have four datasets: D1, D2, D3 and D4. Each dataset contains elements (different sample size in each dataset) that can be described by 100 categories (1 represents that the element belongs to that ...
690 views

### Probit estimation - insignificant coefficients with a significant difference

I'm a postgraduate economics student but not of the statistically inclined sort :) Im running a regression to estimate the likelihood of a patent being litigated. I have two dummies for the patent ...
82 views

### Identification of significant variables where dependent variable is categorical

I have a set of some 50,000 data points. There is one dependent variable which is categorical in nature and there are some 100 possible explanatory variables. Out of these 100, I have to select some ...