residuals

1. Residual Plot Interpretation

I'm fairly new to statistics as a whole so you'll have to excuse my ignorance if this is an easier answer than I've been making it to be... I have an OLS regression. The fitted-observed and fitted-residuals plots are below. Needless to say the data is non-normal. Is there anything I can do to...
2. analisy of residual

Hi, after a regression is necessary to make an analisy of residuals to know if the model were accurate? ù Noob here, could you explaine me please, why you could do an analisy of residuals and for which purpose does it serve?
3. Adjusted residuals Chi square - Interpretation correct?

Hello! I'm looking for help with a chi-square independence test. I carried out this test to check if there was an association between X & Y (both nominal variables). Then, I used adjusted residuals and the Bonferroni Corrections to identify which ones were the actual relationships. However...
4. RSS Residual Sum Squares

Hi im analysing my dissertation which has a OLS model. My RSS figures are very very big in some cases above 15000. I know a high RSS indicates a poorly fitted model. i have run the regression for 6 different countries using 154 observations per variable using 3 variables. My dependant...
5. multivariate regression problem - correlated residuals

this question asks for help for a statistical/econometric problem I can't get the clue: I have a classic multivariate regression problem, i.e. dependent variables are stored in matrix Y having dimension n x p. So p observations come from the same respondent i and we need to expect correlated...
6. What does only one significant standardised residual mean in 2x3 Chi Squared tables?

Hi everyone. I'm writing up a report for my advisor, which compares count data for three conditions, across two different groups. I therefore have a 2x3 contingency table I've analysed with Chi Squared, and am using standardised residuals as a post-hoc test. However, my advisor and are...
7. Systat13 / Problem with plot of Residuals vs Predicted values - repeated measureANOVA

Hi there, I’m trying to do 2 analysis from one set of data. - 1st analysis: repeated measure ANOVA with 1 grouping factor (TRAIT\$) and 1 within factor (TIME). a/ I used the ANOVA procedure. To check the conditions of normality and variance equality for the ANOVA: can I use ‘only’ the...
8. Use predicted values or residuals in the second stage?

Hello all: I have a panel dataset (firms) in which some variables are "choice" variables (that is, they reflect executives' free choices as well as objective characteristics of the firms that may affect those choices). Therefore, in the first stage, I regress the "choice" variables on other...
9. how to describe the residual plots.. plz help

Hello everyone... can you guys help me describe the residual plot.. whether it shows some sort of pattern of not and also whether it shows independence or dependence.... i've upload few images of the residual plots.. just guide me with the steps.. how to analyze and on what basis should i say...
10. Residual Plot against Fits - Is this ok?

Hi! So I've done an experiment and had some data to analyse and I was looking at all the various residual plots situation to see where my data might be far from ideal and I know that I potentially have two outliers as can be seen from top left and bottom left graphs. However, Im not sure...
11. Use residuals as the new DV for a part of the sample?

A between-Subject psychology experiment. The Independent Variable is distant tie (i.e., some one not close to me, a stranger) vs. close tie (i.e., someone I feel close to). The close tie condition is further broken down into "brother" and "son," which caused the trouble. The DV is related with...
12. Explanatory logistic regression model

Hello, I would like to fit an explanatory logistic regression model. In this case, when I am not interested in forecasting or predicting, is it possible to not to pay attention to a residuals analysis? What is the most important to check in this only explanatory case? Thank you very much...
13. How to calculate residuals after xtlogit

Hi, I am writing here to ask about post-estimations after a xtlogit model. Indeed, I would like to calculate residuals. It is very simple after a simple logistic regression (predict residuals, re), but I cannot find the command line after xt logit depvar var1 var2, i(group) I thank you...
14. SEM in AMOS, residual errors

Hello everybody, I need to report on a paper a model tested through SEM analyses in AMOS graphic, In the figure referees asked me to report "circles representing residual error measures for each indicator items"... well, I think I'll find the values in 'estimates'-->'variances', but which...
15. Ambiguous question in homework...

Hi All, I just wanted to probe this board before I went to the TA, as class just started and I don't want to be *that* guy. Anyway, I have an iid set of results and I'm given a known mean, and I calculate the variance. Fair enough. Then I am given an equation akin to a regression line...
16. Repeated Measures ANOVA (Split-Plot ANOVA) analysis of residuals

Hi, how to process decent residual analysis in repeated measures? I know that the residuals should have normal distribution (altogether an in every level of repeated factor too), but is there any other way to examine the residuals? I am considering Levene's test to chcek if the variances...
17. No collinearity between dependent and exogenous variables - Implicatrions

I'm trying to test for autocorrelation in the residuals of an AR(p) model. The stata output is: "the exogenous variables may not be collinear with the dependent variables, or their lags" and no results. Can I conclude from this that the residuals are not autocorrelated? Thank for answering...
18. Quantile regression: how to determine to which quantile an individual belongs

Dear Forum I am running a quantile regression (for the 0.1, 0.5 and 0.9 quantile) on a cross-section data set containing individuals from the Danish labor market aged 40-55. My analysis should try to detect whether there is an unexplained gender wage gap in my sample (a negative coefficient...
19. Prediction with Residuals

Hi I am a very beginner so sorry for the very simple questions. I have first a very general question regarding the linear regression. This is my understanding of it so far put in a simple example: I have a set of data points x_i for 1 <= i <= 10, for instance the age of ten people...
20. Non normality in residuals in SLR

Hey guys. I've done a SLR and after testing the residuals for normality using the Shapiro-Wilk test and I've learned that the residuals are not normal. What does this mean? Is the test useless or can it be saved? Should I use another test to test my two variables?