regression coefficients

  1. L

    What is the difference between R-squared and Pearson correlation coefficient?

    I am doing an investigation about the effect of altitude (IV) on the density of two tree species (DV). I want to prove whether there is a correlation between altitude and the density of tree species A, and altitude and the density of beech tree species B, not the correlation between the two tree...
  2. M

    Comparing regression coefficients between groups

    Hello! I am a psychology student and I’m doing a research which I need help with. The research is about parenting stress in parents of children with autism. The criterion variable is parenting stress and predictor is social support. One hypothesis of the research states that “social...
  3. S

    Interpreting coefficients in pooled cross-sectional data with cluster-dummies

    Data: pooled cross-sectional data. 6 countries. 3 years of cross sectional data (10 year gaps in between), with different samples of individuals in each year. The data are from three periods: 'before', 'during', and 'after' a shock. Response: relative rainforest area Main predictor: profits...
  4. S

    Interpreting coefficients in pooled cross-sectional data with cluster-dummies

    Data: pooled cross-sectional data. 6 countries. 3 years of cross sectional data (10 year gaps in between), with different samples of individuals in each year. The data are from three periods: 'before', 'during', and 'after' a shock. Response: relative rainforest area Main predictor: profits...
  5. J

    Is here a moderation (when b coefficients are nonsignificant)?

    I am trying to check if the relationship between X and Y is a moderated by M. Model is: Y = X + XX + M + XM + XXM X - independable, M - moderator, Y - dependable. Variables are continuous and normal. First I multiply, then center the variables (I hope it is right). Then run reggresion...
  6. IanB

    Stata Help Wanted

    Hello, Can someone offer some help with Stata. I need to know the following. 1) which are independent and which are dependent variables. 2) how to build a model using the variables I can post the spreadsheet and pay for help. I can supply my email address and Skype if suitable, or send me a...
  7. B

    Understanding ordinal regression

    Hi! This is a really simple question, but one for which the answer continues to elude me! I understand that in a binary logit regression the resulting logit is the probability of an event occurring, defined as Ln(P/1-P) However, in an ordinal logit, in which there are multiple...
  8. G

    Regression Using Interaction Terms - PANEL DATA

    Good afternoon, I am working with a panel data with more than 2000 observations and only two years. My topic is on "Full Risk Insurance" in rural households within a village. Thus, my regression is as follows: log_Individual_Consumption = log_Individual_Income +...
  9. L

    Compare regression coefficients within one sample

    Hey, I run two univariate linear regressions within one sample (same subjects, two different conditions). Now I would like to know how to compare the regression coefficients in order to find out whether they differ significantly. All of the methods I find apply to a case with two different...
  10. R

    Averaging LASSO coefficients for repeated random partitioning of data

    Is it reasonable to average LASSO coefficients from repeated reshuffling of training/test sets? Suppose I randomly divide my data into testing & training sets, then within the training set use 10-fold cross-validation to choose an optimal λ, then refit on full training data and record the...
  11. M

    95% Confidence Interval for Regression Coefficients Question

    Hello all, I have been trying to figure out how to answer these homework questions for far too long and happened upon this forum with hopes that I could get a nudge in the right direction…Here is the problem as an attachment. Also included is my work thus far…I think my issue is...
  12. J

    compare two Beta coefficience between two different model.

    I am running two regressions, each with the one independent variables (Y) but with two different dependent variables (X1, X2). examply: Y is central obesity, X1 is waist circumference, X2 is waist / hip ratio. I think the waist/hip ratio more good indicator than waist for central obesity...
  13. M

    Regression Model is signifianct but all explanatory variables are insignifiant!!!

    Hi all, I need your help is the following: My Model is as the following Dependent variable is GDP per capita growth rate Explanatory variables are Domestic Investment (measured in Capital formation as percentage of GDP) Population Growth Human Capital (Measured in enrollment in...
  14. C

    How2interpret inconsistent Beta values in different steps of hierarchical regression?

    I did hierarchical regression analysis on my data due to having moderation effects in my research model. R2 increased from .695 in model1 (main effect only) to .734 in model2 (main &interaction effects)(sig. F change = .000). All the assumptions for the regression analysis have been met. I...
  15. C

    Comparing regression coefficients - dependent samples

    Hi, I used two methods (A and B) to obtain measurements in a group of subjects. The methods (ways of measuring) are different, but they should measure the same property. I performed linear regressions to analyze the relation between the measurements (m_A and m_B) and another property (p)...
  16. F

    Logistic regression - behavior of uncorrelated predictors

    Hi all, I am a bit puzzled about the behavior of uncorrelated predictors in logistic regression. As in OLS, I thought that if two predictors (X1 and X2) are uncorrelated, then the regression weights of X1 will not change from a regression that only includes X1 to one that includes X1 and X2...
  17. Q

    Correlation help

    i ran a normality test and both variables were >0.05 so normal. but when i run a linear correlation so i can generate a predictive equation one of the unstandarised co-effciens (B) shows the number 2.104E-5..............what's the E-5?? in class this never happened and I'm on break now so can't...
  18. R

    multiple Rolling regression

    Dear STATA- User, I`m using STATA while writing my thesis and have one problem: I regress Jensen Alphas for 303 funds while 200 days and I need for every day and every fund one alpha, so I would get a list of 303 funds with 200 Alphas. If I use the command: foreach fonds of varlist ***...
  19. B

    how to compare poisson regression coefficients between two models in SPSS?

    I have two different Poisson models: Y = b1 + b2*X (1) Y = b1 + b3*X + b4*C (2) I would like to compare whether b2 is different than b3? The model is a poisson regression, is there a quick way to do it in SPSS? Many thanks Ezgi