regression coefficient

  1. B

    'relative difference' as dependent variable

    Hello all, I need help in understanding the regression result. The dependent variable is the travel distance difference within partners. The independent variable is age difference within partners. My question is how to interpret the association between age difference and travel distance...
  2. E

    Sign differences in coefficients arising from using ordinal vs continuous data

    I run a simple OLS regression: y=a +bx+.....+e, I obtain an estimate of b<0. Prior researchers running the a similar regression obtain an estimate of b>0: I'm trying to reconcile this difference. The only methodological difference driving our results is the following: In my study...
  3. Y

    interpretation of regression coefficients in categorical*continuous interaction

    Hello, I have been struggling with the interpretation of the coefficients in my multiple regression model and I hope you can help me with that! Thanks in advance for reading the long explanation that follows and for thinking along! I have 4 predictors in my model: 1 binary categorical...
  4. C

    SPSS Cox regression analysis

    Hi, I'm a student at university doing my dissertation project. I'm looking at what could independently predict readmission to hospital. We have done a cox regression analysis but the results seem to be the wrong way. It shows that a factor increases the likelihood of readmission but when...
  5. Z

    How do I interpret regression coefficients when there are log transformations?

    Hi, I'd like to know how to interpret with percentage the slope coefficients of a regressoin when I have: A- log(Y) ~ log(X) b- log(Y) ~ X c- Y ~ log(X) So far I found this web site, but I'm not sure it is accurate: http://www.ats.ucla.edu/stat/sas/faq/sas_interpret_log.htm...
  6. A

    panel regression vs cross-section

    Hi, I'm running the following regression: y=A+Bx+...+year_dummy for the years 2002-2005 and get that B is statistically significant. However, when I run separate regressions for each year, the significance disappears (for all years). I'm having a hard time interpreting the results - any...
  7. N

    Averaging regression coefficients for 50 regression , how to report t statistic ??

    hi i have estimated same regression equation for 50 stocks, i need to report the cross sectional average of the regression coefficients, how can i report the t statistic for the cross sectional averages. Shoulc i average them too?? help needed
  8. B

    Interpretation of the regression coefficient of a proportion type IV

    If I want to use some proportion type independent variables in a logistic regression, then what will be the interpretation of the regression coefficients corresponding to those proportion type variables? Will that mean- "The change in log odds for per unit change in the proportions"? But what...
  9. B

    Using regressions in monte carlo simulations

    Hey Guys, I'm building a valuation model with monte carlo and regression elements but could use a bit of help. The model breaks down the firm's revenue and costs by product. To estimate the cost of producing each product (cost per unit), I've regressed unit sales of each product against...
  10. A

    Variance of a corrected regression coefficient

    Ppl I really need help! Please, help me solve it: Consider the model Yi = b0 + b 1Xi +ei e_i~N(0,s^2_e) iid X_i_N(m_x,s^2_x) iid Z_i = X_i + u_i, u_i~ N(0,s^2_u) independent of Xi Suppose we have the following data: a. A sample M of n units where Y_i, X_i, Z_i obey the above model...