IBM SPSS Statistics (formerly SPSS, i.e. "Statistical Package for the Social Sciences") is a proprietary cross-platform general-purpose statistical software package. [For SPSS Modeler, use 'spss-modeler' tag.]

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spss, how to enter the covariates for adjustment..?

I Spss, how do you Adjust for two binary variables, "gender" and "age" (<24 >23)? The primary covariate is a continuous variable with a binary dependent. Is it correct to insert age * gender or is ...
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6 views

Correlations between nominal data with multiple options

I would like to investigate which genetic variations appear with a higher frequency on one (left OR right) or both sides of a tumor (left AND right) within an array of different patient samples. ...
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1answer
14 views

Categorical data comparison

I've been struggling with the following problem and I am not sure if I am using the right statistical method. Namely, I am analyzing passwords characteristics from a questionnaire and from real ...
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1answer
33 views

PROCESS macro in SPSS - Analysis for multiple IV?

I have a moderated mediation model with 4 IVs, 1 mediator, 1 moderator, and 1 DV. I can't find the right model in the templates provided by Andrew Hayes for his SPSS PROCESS macro. Can I carry out one ...
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0answers
14 views

Trying to run ANOVA with time variables

First, can I do this? I never learned of using hours:minutes:seconds as ANOVA values. Second, out of my 3 groups, only one is normal and no transformation will work (can I even use transformation for ...
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1answer
303 views

3 way mixed ANOVA & pairwise comparisons effect size

I have a 3 way mixed ANOVA, where I have 2 significant main effects, one significant two way interaction and a significant three way interaction. I've been told to not describe the lower order ...
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1answer
1k 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 ...
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5answers
48k views

When is R squared negative?

My understanding is that R squared cannot be negative as it is the square of R. However I ran a simple linear regression in SPSS with a single independent variable and a dependent variable. My SPSS ...
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0answers
17 views

ANOVA possible?

I have 2 groups (variable = condition) Control, Experimental - I have coded them as 1,2 in SPSS. I have measured these at three time points - pre, ret1 ret2 (currently just a string variable) I have ...
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0answers
32 views

Conflict answers between SPSS and R Software [closed]

I used R software (auto.arima function) in getting the best ARIMA model for my data. Then I used SPSS in getting the parameter estimates since there is no p-value ...
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1answer
49 views

chi squared with proportions

We want to know whether there are any differences in the location of mole hills that occur in two fields. We have been looking at the distance from a fence that mole hills occur. We have separated ...
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1answer
487 views

Regression with multiple dependent variables and 2 sets of multiple independent variables

In my data I want to be able to determine which set of IVs (there are 8 variables total, 4 in each set) does a better job of predicting a set a DVs (there are 4). I know I could use multivariate ...
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1answer
14 views

nominal variable (fixed actor) only relevant to a subset of data in SPSS / GLM

An example to illustrate the question I have: Suppose Strength is a function of gender (male/female) and, AMONG MALES, testosterone level (low, medium, or high). I don't care about testosterone ...
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1answer
133 views

What can I do to if I have a nominal dependent variable and scale independent variables? [closed]

Our dependent variable is a nominal variable that asks respondents "would you share this video?" with the responses being either yes or no. The hypotheses we are testing are all relational directional ...
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0answers
13 views

2x2 moderated mediation model - how to build the moderator?

Hello friends of statistics, first of all I want to excuse for my bad english skills. Nevertheless I need your help :) My Design: IV-1: social status of person, IV-2: public vs. private shown ...
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1answer
16 views

Binary Logistic Regression with multiple binary and ordinal independent variables

In my data set I have one dependent variable (dead or alive) and 37 predictor variables. 35 of my predictor variables are dichotomous (Obese: 1 or 0, Female 1 or 0, etc), however 2 of my variables are ...
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0answers
16 views

Performing PCA on a tetrachoric matrix in SPSS

I am currently working on a project where I have nine dependent variables, each binary, measuring similar outcomes. Accordingly, I'd like to perform a principal component analysis on them to reduce ...
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0answers
23 views

Problem with number of dimensions in a correspondence analysis

I got 3 variables: X: numbers between 0-40 Y: numbers 0-1 Z: numbers 1-3 Each variable include 1000 samples. I would like to perform the analysis between [X, Y], [X, Z], [Y, Z] I use the same ...
3
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1answer
382 views

interpretation of correlation matrix of regression coefficients in Cox regression?

I am using SPSS to perform Cox regression. After finding all the significant covariates, there is a table called correlation matrix of regression coefficients. My question is what kind of information ...
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2answers
957 views

Correlation among categories between categorical nominal variables

I have a data set with two categorical nominal variables (both with 5 categories). I would like to know if (and how) I am able to identify potential correlations between the categories from these two ...
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2answers
792 views

Correlating time series for 20 regions (SPSS)

I have a question to which I can't find an answer although I spent really awfully lot of time searching. I have time series data for about 20 regions of a country. Each time series covers 20 years. ...
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1answer
98 views

How can I find tendencies in specific cases between two groups?

I'm doing this project where we are investigating whether social networks can influence peoples distinctiveness. Briefly summarized, we have primed a group with a social media and another is the ...
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1answer
19 views

Different results when conducting regression and ANCOVA in SPSS [closed]

I'm conducting a regression analysis with two binary categorical variables and one continuous variable as independent variables. From my understanding, the results should be identical as the results ...
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0answers
18 views

How to conduct a Generalized LM in SPSS, with proportion dependent variable

I must deliver some analysis result report, by using a Generalized Linear Model for a dependent variable I have, which is in proportion values (invisibility), with two factors. The first factor is a ...
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0answers
9 views

SPSS: GLMM and(adjusted) odds ratio

I am performing a retrospective study and the relative statistic analysis. I am studying the the risk factors for the occurrence of complications during medical procedures. I have 50 subjects ...
32
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8answers
10k views

Is PCA followed by a rotation (such as varimax) still PCA?

I have tried to reproduce some research (using PCA) from SPSS in R. In my experience, principal() function from package psych ...
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0answers
6 views

SPSS Mixed model with imputed data and model LLC scores

I am supposed to build several models (it is multilevel analysis of students from different schools). I used multiple imputation for missing data after running MVA and pattern analysis. Now I have 5 ...
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0answers
18 views

DFA in SPSS: Sorts effectively, but Box's M is still 0.000. Is the analysis worthless?

I am a geologist attempting to apply the discriminant function analysis to surface features I have mapped in ArcGIS. At the moment I have 4 dimensionless sorting variables calculated for each feature, ...
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0answers
18 views

10-fold cross validation of a Multinomial Regression Model SPSS 20.0

I have a set of 125 people that belong to one of four nominal categories. Each person is described with 7 descriptors with 2-5 nominal variables that I use in my regression model to predict the ...
3
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1answer
103 views

Adjusting for confounders when comparing means with t test

In an article I found recently they were able to compute the difference in means of two groups (presumably with a t-test) while adjusting for confounders; they called this the aDiff (adjusted ...
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1answer
128 views

Why do final cluster centers change after applying results from past K-Means clustering (SPSS)?

I have a question regarding what happens after I apply k-means clustering centers to a new data set. Basically, I ran k-means clustering on a dataset1, saved the cluster centers, and applied it to a ...
7
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2answers
7k views

What is component (factor) score coefficient matrix in PCA or factor analysis and how is it calculated?

As per my understanding, in PCA based on correlations we get factor (= principal component in this instance) loadings which are nothing but the correlations between variables and factors. Now when I ...
2
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0answers
30 views

In a linear mixed model what does the F value represent?

I am examining the output of my linear mixed model in SPSS and need to decide how to report my findings. I was considering just reporting the p-values. However, my supervisor wants me to provide more ...
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1answer
587 views

How do I convert unstandardized RMR estimates into standardized RMR estimates?

I am having difficulty turning unstandardized RMR estimates from AMOS software output in a SEM into standardized estimates to enable suitable interpretation. Can someone give me advice on where to ...
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1answer
2k views

Mixed model in SPSS with random effect and repeated measures

I am working on analyzing a dataset that involves repeated measures data. The data was previously analyzed by a colleague using custom code written in C++, but I have expanded the dataset and am ...
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1answer
15 views

Problem with Wilcoxon test in SPSS

I have a question about Wilcoxon test in SPSS. For a work in my university i have to test 2 results of metrics applied in 2 algorithm (A2-NSGA3 and NSGA2), the results are as follows: ...
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0answers
18 views

Trying out a Leave-one-out cross validation and I'm not sure what to do with the output

I'm very new to cross validation, but I'm submitting some regression models as part of a paper and the reviewers are requesting it. I used the method listed here on a regression model with 200 ...
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0answers
13 views

Generalized Linear Model on SPSS with the 'error': “set to zero because this parameter is redundant”

For my dissertation I have a lot of data and many nominal variables. None of my data is parametric. I tried transforming some of the percentage data with arcsine because it was in proportions and the ...
7
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1answer
165 views

Predicting variance of heteroscedastic data

I am trying to do a regression on heteroscedastic data where I'm trying to predict the error variances as well as the mean values in terms of a linear model. Something like this: $$\begin{align}\\ ...
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0answers
25 views

CATPCA Missing values

I have posted a question on stackexchange and you answered me very well before. Thank you. I have another CATPCA question and I want to ask to find out how missing values are used if you select ...
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0answers
6 views

How do I manually calculate post-hoc tests of independence between all cells using output from SPSS complex systems module?

I'm trying to run post-hoc tests of independence between all cells using a data set that I need to run the complex samples module in SPSS. How do I use this output that includes population proportion ...
2
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1answer
359 views

One way Anova Test validation

Let me give you an example to show what i am trying to. Let's say 50 patients started a cure for a disease and it took 2 months. So, I want to compare the first month's tumor sizes to the second ...
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1answer
32 views

How can I transfer an ARMAX model in Excel in order to forecast future values?

I am currently trying to set up an Excel based tool, that alows to predict future values based on an ARMAX model, previously set up in SPSS. The Excel tool contains the coeffienients, calculated by ...
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2answers
2k views

Mediation analysis when mediator is categorical (SPSS)

I want to do a mediation analysis, with the following variables: ...
5
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1answer
821 views

Post-hoc test in two-way ANOVA

I am doing a two-way independent ANOVA using type of organisational change (5 levels) and job level (7 levels) within the organisation as the factors (in SPSS). I followed Andy Field's procedure ...
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0answers
14 views

Which statistical test (2 x 2 x 2 three way factorial design, splitted dependent variable)?

I have data collected via a survey and the study is a 2 x 2 x 2 between subject design. For the dependent variable I asked two questions so that it is a split DV = DV_1 + DV_2. My question is, which ...
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1answer
540 views

To find significant differences between means using repeated measures GLM

I am new in using SPSS and stuck with General Linear Model [which is just linear model] procedure. I have 8 cognition variables like latency, thigmotaxis, spatial, quadrant, nt quadrant, proximity, ...
0
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1answer
24 views

Analysis of experiment without using MANOVA

My dissertation topic is on differences in body image in different dance and different skill levels. My IV is dance type (Dancehall, Street, Contemporary, Ballet, Other and non-dancer) my DV's are 5 ...