-2
votes
1answer
48 views

ISPSS: Cross-sectional time series analysis

I am trying to run a multiple regression in SPSS. I am using panel data with 4 independent variables. Of these, one is a dummy variable. Can someone please guide me through the process or give me ...
0
votes
0answers
28 views

How do I find if a dependent variable is affected by another dependent variable?

I have one experimental group with language disorders (independent variable) and I have administered them 4 tests (dependent variables). The "language" test which comprises of the sum and two subparts ...
2
votes
3answers
129 views

Are the results of OLS linear regression correct?

How could we know if the coefficients and R-Squared in the following table are reliable and are correctly computed or not? Is there any way to validate the correctness of the results, considering that ...
2
votes
1answer
158 views

Non-normality of residuals in linear regression of very large sample in SPSS

I have a dataset of ~17,000 cases in SPSS 21 with which I am trying to run multiple linear regression. I have plotted the Studentised residuals against the unstandardised predicted values and also ...
1
vote
0answers
71 views

Stepwise regression and mediation analysis

In my research I have 3 domains of IV, 4 of MV and 8 of DV. To run mediation analysis I made possible chains from the results of stepwise regression and only one chain fulfilled the assumptions of ...
0
votes
0answers
174 views

Combining multiple imputation results for hierarchical regression in SPSS

I'm running a hierarchical regression model in SPSS. I used multiple imputation to handle missing data (14 imputations) and then ran the regression. The regression is: Step 1: 3 dummy coded ...
0
votes
0answers
26 views

How do we make a distinction between standardized and unstandardized coefficient? [duplicate]

In SPSS, regression analysis yields two types of coefficients (standardized and unstandardized). What is a standardized coefficient in statistical sense?
0
votes
0answers
74 views

How to account for short-term trends of time-series data?

I would like to find out which of my 10 independent variables (IVs) best accounts for the changes of my dependent variable at different points of time within the last 30 years. In order to explain ...
0
votes
0answers
91 views

How to fit a multiple regression model that takes into account 50 days of each individual's history

I am using simple linear regression to predict the number of days of school a single student might miss after 250 days using their cumulative daily attendance data over the first 50 days of the ...
0
votes
0answers
91 views

Probing of 3-way-interaction with one continuous and two categorical variables

I have a model for multiple moderated regression with payment (continuous) as the DV, one continuous predictor (neuroticism), and two binary categorical ...
1
vote
2answers
670 views

Interpretation of coefficients in multiple regression without intercept

I am trying to interpret the SPSS output from a multiple hierarchical regression where the intercept has been eliminated because it is not significant. I have read previous discussions about ...
0
votes
1answer
582 views

How can I test Control variables within a mediation analysis?

In my Masters thesis I do a mediation analysis with Multiple Regression Analysis. So I make use of the Baron & Kenny method for testing mediation. I also want to control for some variables. For ...
0
votes
0answers
125 views

How to correctly estimate statistical significance of regression coefficients?

Say that I want to determine the statistical difference between the coefficients derived from the FF three factor model of two portfolios (Spe and ...
1
vote
1answer
158 views

Multiple regression with dummy variables

I need to calculate MR but my data consists of many dummy variables. I had a question in my survey that asked for the budget/month. But instead of giving the option to fill in a value, I offered ...
2
votes
2answers
306 views

Help with Anova of categorical and continuous variable in R and SPSS output

I am having some trouble running an Anova on categorical variables in R and matching SPSS output. What I need to do is run an anova on the dataset below (its a made up data set). But, I need to know ...
0
votes
0answers
117 views

Analyzing reflected and transformed variables

I want to perform multiple linear regression on my variables; since my dependent variable was negatively skewed, I reflected it and then I log transformed it. My independent variables was positively ...
1
vote
1answer
2k views

Can non normal data be used for factor analysis and multiple regression? If so what is the procedure to justify it?

While I was writing up the analysis in my thesis, I just came across when rechecking my test for normality, that the p-value for most continuous variables was .000, which is less than .05, and it ...
2
votes
2answers
437 views

Can Cox regression be used to assess the difference between two treatments

In this project our objective was to compare the revision rates between two surgical techniques. We have time to revision (time between two surgeries), demographics, and other variables we are ...
2
votes
0answers
610 views

Differences between Stata & SPSS in multiple regression outcomes

I'm a graduate student working on a thesis whose aim is to test complementarity between 2 practices (CI and INNO, according to theory of supermodularity). To do so, I calculated two new variables ...
7
votes
1answer
670 views

Multiple imputation questions for multiple regression in SPSS

I am currently running a multiple regression model using imputed data and have a few questions. Background: Using SPSS 18. My data appears to be MAR. Listwise deletion of cases leaves me with only ...
0
votes
2answers
1k views

SPSS syntax to produce two-tailed test for regression

I have some syntax for SPSS and it produces everything that I need perfectly, although for some reason it spits it out one tailed instead of two tailed. Is there any way of editing this syntax so that ...