# logarithmic

1. ### Interpretation of Interaction Term in Log-Linear Model

Hello All! I am currently writing my Bachelor’s Thesis and have a question about the interpretation of an interaction term in a log-linear model. Without an interaction I’d take the coefficient of a x variable and transform it via exp(coefficient)-1 * 100. Then I am able to argue: A 1 unit...
2. ### How to interpret log differences in a partial log-log regression

I'm currently trying to understand the relationship between firm performance and various independent variables (e.g. firm size, firm profits..). Now, the regression I'm estimating looks like the following: Δlog(firm_performance) = α + β1 Δlog(firm_size) + β2(other_variable) + ε Where Δ...
3. ### Help with interpreting log in regression

Good morning, I am new to this forum and would like some help with the interpretation of the following regression. I hope I am in the right place. lnWaste = +A(lnGDP) +B(lnGDP)2 I have found coefficients for lnGDP= -1.85 and for (lnGDP)2=0.1 Now I am trying to give an interpretation of what...
4. ### How to present transformed data that shows individual data points

Hello! This is my first post and I'm hoping to get some help on how to work with transformed data for a research publication I am writing up. Basically what we did was monitor the levels of a particular protein after traumatic brain injury. Our sample sizes were originally about 25 but due...
5. ### Dealing with Log(0)

Dear all, I’ve been stuck for quite some time with a problem that relates to use of log-scale with values that equal zero. My data comes from an experiment in which five different instruments (one of them using the reference method) take two measurements of a given sample’s signal emission. A...
6. ### log(0) should have a real value!!!

Dear all, I’ve been stuck for quite some time with a problem that relates to use of log-scale with values that equal zero. My data comes from an experiment in which five different instruments (one of them using the reference method) take two measurements of a given sample’s signal...
7. ### Using regression to find "balance" (Making a video game. :))

Hello everyone. I'll try to be brief. The first paragraph or so may be irrelevant to answer the question, but I'm including it for context. For school, a friend and I are developing a strategy game wherein combat units are constructed out of components that offer different benefits...
8. ### Why use logged variables in analysis?

Probably, this is a very basic question but I don't seem to be able to find a solid answer for it. I hope here, I can. I'm currently reading papers as a preparation for my own master's thesis. Currently, I'm reading a paper which researches the relationship between tweets and stock market...
9. ### Creating "score" --> by adding ORs?

I have created a prognostic model using logistic regression. It predicts diabetes based on 6 independent variables (age, sex BMI, etc). I understand that Exp(Xi) = Odds Ratio of each (risk) factor in the model. I also understand that the probability of diabetes = exp(bo+ bi Xi) /((exp(bo +...
10. ### Want to recode a logarithmic scale to linear

I have a set of variables measured on an ordinal scale. The format is LIKERT ranging from 1 ("Daily") to 6 ("less than once a year"). I think it is OK to analyze the data as interval scale data, then being able to use parametric tests. The underlying scale is logarithmic, meaning that 1 is...