coefficient

  1. P

    Interpret the root of an independent variable

    Hello everybody, I have a regression model of the following form to investigate: y =b_0 + b_1 * x_1 + b_2 * sqrt(x_2) Now I want to give an interpretation of the model and I do not know how to interpret the influence of x_2 respectively b_2. The formulation for x_1 would be: An additional...
  2. B

    Logistic regression : negative coefficients, categorical variables

    Hi I am trying to build attrition model and have these variables :- 10 categorical variables with sub levels which created into dummy variables and 4 continuous variables in a trained data set. My Y dependent variable is binary variable. After running log regress, the results are some of the...
  3. T

    Basic high school correlation coefficient help

    Question + info: http://i.imgur.com/iyBWi2i.png In question 3, the correlation coefficient I get is the exact same as in question 2... Therefore no improvement at all, what gives? For question 3, I just calculated sale price/sq foot and then took natural log (ln) for each value. So...
  4. C

    Multiple Regression on SPSS - Correlations and Coefficients

    Sorry if this question sounds laughable to any of you. I'm really new to stats and find it quite challenging. I'm a 3rd year Biology student and am investigating the effect of several factors on the number of bats that pass the detector device each night. I have run a multiple linear...
  5. S

    conditional logit model_help with data interpretation

    0 down vote favorite I have performed a clogit following the instruction of Aizaki et al.2012 but I am not sure on how to interpret some results that seems quite strange. A brief explanation of what I am trying to do:I am looking at the tourist preference on different mountain habitat in...
  6. M

    lme model with 3 categorical and 3 continuous variables - output coefficients?

    Hi, I have a regression model with: 3 continuous variables 3 categorical variables - taxon= 4 levels --> I get 3 coefficients in the MLM output (OK) - continent= 5 levels --> I get 4 coefficients in the MLM output (OK) - land cover= 2 levels --> I get both 2 coefficients in the MLM...
  7. R

    Negative confidence intervals in regression

    Hi all, So I'm really stumped. Basically I have a negative standardised coefficient value of -0.35, and a 95% CI equals (-0.47, -0.23). I'm having trouble interpreting the interval because it's negative. I'd have thought that, the lower and upper bounds would be reversed. Because if the...
  8. F

    HELP! Coefplot: how to display only certain variables?

    Hi everyone, I want to use coefplot just to display the coefficients of two categorical variables holding for all the others after a reg. I have saved the output of the regression with est store and then I use coefplot...this is the script reg umeat0 i.soclas6 i.titstu1 i.civstat1...
  9. M

    Meta-analysis: different information about relationships between two variables

    Hello everyone I need help with my meta-analysis. I have collected all the studies that I wish to include and would like to take Pearson's correlation as effect size. However, many of the studies do not report correlations, but rather path analysis or SEM coefficients or regression...
  10. I

    Puzzled by Correlation

    This is a real problem although I'm using a made-up statistic (# of apples) for this. Say I am interested in how many apples people eat in a year. This varies by many factors. First I look at the country difference (the US vs. Canada). From historical data of the average number of apples...
  11. G

    Positive correlations to dependent variable, but negative coefficients

    First of all, sorry for the huge pictures, but I'm in desperate need of some input and help on the results following a study. I'm trying to interpret the results from my study, but I can't quite figure out what causes some of the positive correlations to turn into negative coefficients in the...
  12. T

    Plotting graph using the correlation coeff, continuous IV and DV with an interaction?

    Hi guys, would appreciate any help! So i'm looking at the association between two factors (let's say IV: A, DV: B). Further to this i'm then looking for an interaction of SES. I did attempt a graph of this before, but I did it wrong, I think I used the means or something when I really need...
  13. E

    Interpreting similarity coefficients

    I am interested in finding out a good measure of similarity to determine if two sets are significantly similar to each other. I know there are many different similarity coefficients, like Jaccard Index, Dice Coefficient, Cosine Similarity, Simple Matching, etc. My problem is how to interpret...
  14. trinker

    Rank Coefficients

    Is there a way to rank the relative importance of correlation coefficients?
  15. S

    Compare regression coefficients across groups in panel data

    Dear TalkStats users, I am wondering how to test for differences in regression coefficients across groups in panel data (after a fixed-effects regression). Particularly, I can't think of a solution of how to construct interaction terms if the groups you are interested in are not the same...
  16. V

    Analysing Panel Poisson Coefficients

    Hi, I'm running a panel poisson regression with fixed effects in Stata. The result in Stata doesn't display a constant. Normally I use standard poisson regression and then the coefficients represent the procentual change of the constant. So I'm confused about how to interpet the coefficients...
  17. C

    Not Significant Coefficients

    I've run a logit regression to estimate the probability of attending high school. I've done this for many years. The thing is that some coefficients resulted to be not significant in some years and significant in some others. So my questions are: 1- The fact that a coefficient is not...
  18. A

    How to interpret a standardized multiple regression coefficient

    How can I write an interpretation of the standardized multiple regression equation for both Age of Child and Number of Siblings in this model: ToM^ = 0.68TELD – 0.11Age + 0.45Siblings The dependent variable is Theory of Mind ̧ and the three independent variables are TELD (Test of Early...
  19. A

    Interpreting an unstandardized partial regression coefficient

    Hi, anyone know what two equivalent interpretations of the below unstandardized partial regression is? Y^MathsValue = -7.31-0.27XAnxiety + 0.52XSelfCon + 0.09XM_Attitude + 0.15XF_Attitude where the DV is Perceived Value of Maths (MATHSVALUE) and the four IVs are Maths Anxiety (ANXIETY)...
  20. J

    [r] coefficient that compares ellipses

    I'm working on an undergraduate dissertation in Phonetics. (I am on a Linguistics programme so my knowledge of Statistics and Maths in general is rather shaky!) I am trying to demonstrate whether or not an intervention group of Spanish teenagers learn to pronounce English vowels accurately more...