regression analysis

  1. U

    Are the parametric analyses appropriate?

    In an experimental study, the aesthetic value (independent var) of a picture is manipulated into (low and high quality). "Low Quality" -- to make it look less appealing; and "High Quality" to make it look "very attractive." I want to examine the effect of "Low" and "High" Quality images on the...
  2. stacy

    multinomial logistic regression

    hi , i have two questions: 1)- is it adequate to run a multinomial logistic regression test using spss on two categorical variables to test the influence relationship, knowing that data is collected via likert scale items and then computed into 5 classes : example from 5 to 10: weak, from 15...
  3. U

    Examine the effect of one independent var

    Hi, I want to examine the effect of still images (independent var) with two levels (monochromatic and multi-color) on mood perception (dependent var) of participants. What is the appropriate analysis I must conduct in this case? Furthermore, I conduct a regression analysis to examine the...
  4. S

    Matched Groups Statistics

    Hello all hope this is the right thread for the question and that someone will be able to help me out :confused: I have created a propensity matched control for my case group and am unsure now which test to use for statistical comparision of my outcome variables (most categorical, some...
  5. U

    compare groups and examine relationships

    Hi, 1.I am planning to examine the level of user engagement of participants playing a particular computer game, that has two versions, one in color and the other one in black and white. I understand that I can conduct a one way-within subject test ANOVA to compare the means of the two groups...
  6. M

    Combining data from different sources

    Hi, I have data from two very different sources (bird counts from ships and bird counts from the shore) which aim to estimate the same population/outcome. Both data have different covariates/predictors and thus it is difficult to combine both data in the same regression model. Does...
  7. E

    Difference in Difference-SPSS: Creating dummy variable

    I am doing a program evaluation and want to use difference in difference analysis. I calculated the difference in difference by hand and now want to perform a regression. I have made a dummy for 1=treatment and 0=no treatment. But since I have done my pre and post test on the same...
  8. G

    Regression on two explicative variables

    Hello, I am currently doing a thesis which aims to explain returns of stocks in function of the ownerships of some stakeholders. In the Excel attached, I would like to explain the returns in the last column with the two explicative variables ( Venture Capital % Ownership and Hedge Funds %...
  9. M

    Regression Analysis

    Hello, It would be great if somebody can help me with this: Is it correct to conduct factor analysis on data source (A) and then run a simple regression analysis with derived factor from factor analysis as independent variable and a item from the same data source (A) as dependent variable...
  10. V

    Event probabilities from the regression analysis

    Hi, I am looking for all possible sources (literature, articles, books) with descriptions how to transform different kinds of regression analysis outputs in event probabilities (if feasible). Any help is wellcome. Thanks!
  11. S

    Interpretation help for my negative binomial regression --> Testing for curviliniarit

    Hello everyone, I am a newby to that forum, so I hope my question is not redundant. I am currently sitting on my master thesis where I investigate which effect diversity in teams has on publications. Herefore, I have a dependent variable 'publications' which is a count variable. I have two...
  12. M

    Ordinal regression (logit) with selection variable?

    Hi all, want to do an ordered logit regression. I have data from different sources and need to use the source as a selection variable for the dependent variable (only for the dependent variable, not for the regressors!). I know how to do this for a linear regression. Is there a way to do this...
  13. M

    Regression with stratified data: What to do?

    Hi, I want to model a bird population in a country via regression analysis (Poisson regression due to count data). In order to optimize the sampling effort versus precision, I use a stratified random design: The country is splitted into 10 different habitats, and from each habitat I draw...
  14. U

    Which SSR (Regression sum of squares) is theoretically larger?

    Dear all, I have 3 fitted lines: Y = b0 + (b1)X Y = (0.5)b0 + (b1)X Y = b0 + 0.5(b1)X Where and In addition to the the 3 equations above, using the information provided by the image attached I would like to determine (theoretically), which one of the three fitted lines (listed...
  15. U

    Two variable OLS Regression - using normal equations

    Hi, I am experiencing difficulties in understanding the following question; I have been assigned two variables (X and Y), and have been given a data-set which consists of 50 data entries for both variables X and Y, ranging from 15-60. I have also calculated ƩX, ƩX^2, ƩXY and ƩY. Essentially...
  16. E

    Country inclusion in gravity model

    Hi! I will be using a gravity model for my master thesis (not an economics/statistics major) focusing on remittance flows within the EU. I am familiar with the gravity model but have a fairly basic question to which I have not found the answer through books or articles.. or at least I have...
  17. J

    How do I test the significance of my correlation coefficients for various regressions

    Hi, I have a set of 25 points and I used a TI-84 calculator to calculate the linear, quadratic, logistic, exponential, and power regression models for this data set. I have, likewise, obtained the r^2 value for each of these regressions. Some of these r^2 values appear to be quite similar. For...
  18. G

    [R] Shapley values and relaimpo

    Hello everyone! I’ve been pondering this question for some time. I’ve searched online and on this forum and I haven’t found the answer to my question. Throughout my searches online I’ve found that Shapley values are obtained by running all the possible combinations of predictors against the...
  19. J

    Regression following MANOVA results

    Hi Stats Gurus, This question is about a regression analysis that I want to run, but I am not too familiar with this type of analysis. I have conducted MANOVAs to isolate variables that are significant out of the ones that were theoretically relevant for my analysis. I would now like to...
  20. V

    Regression on Survey analysis across 50 states

    I ran a survey across all 50 states in the US. The goal is to see if there is a correlation between people's love for the state and the population growth % over 5 years. The survey has 15 questions - all on Likert scale (1 to 5 Strongly Disgaree to Strongly Agree) - questions about people's...