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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How to test for differences from baseline where dependent variable is non-normally distributed using SPSS?

I have some physiological measurements which consist of 4 events measured in a "during task" condition and preceded and followed by a rest period. I want to test that the data points immediately ...
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343 views

How to use PCA+varimax components as independent variables in regression in SPSS? [closed]

I want to use body measurements to predict body weight in broiler chickens. There were seven body parameters measured. I did a principal components analysis and three components were extracted after ...
2
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1answer
5k views

Types of inverse transformations

In performing an inverse transformation to correct for skewness/kurtosis in SPSS, it asks me to choose what "type" of inverse transformation and I have no idea what the differences between these ...
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1answer
4k views

“Object not found” error in gls

As the R very beginner I'd like to ask if anyone could help me with the following problem? ...
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5answers
55k 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
102 views

Reporting the general perception of tested sample [duplicate]

Possible Duplicate: Working with Likert scales in SPSS I have a data sample of which recorded individual's perception on whether a specific option is viable or not. The data was recorded on ...
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2answers
3k views

Multiple imputation on single subscale item or subscale scores?

Recently I am conducting a research on the relationship between motivation/attitude variables (Gardner's model) and English language proficiency in the Philippines. I encountered a problem: missing ...
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4answers
1k views

What's the appropriate spss test?

Context I have 25 men and 25 women as participants, and they did exactly the same thing: Each of them heard an attractive dialogue and they had to choose between a photo of a woman in red and a woman ...
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1answer
934 views

Detect multi-punch responses in SPSS syntax?

I have a dataset that includes an open-ended response that was coded into categories by a vendor. The vendor created 50 multi-punch categories stored as 50 true/false variables. By putting this in a ...
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2answers
205 views

What distribution function might describe the following statistical experiments?

I have made several experiments, the result graphs are below, I need to figure out what is the distribution function of the following random variables... Where do I start with statistical analysis of ...
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1answer
1k views

Assigning class to the cases after K means cluster analysis (SPSS)

I have carried out PCA and then clustered the 6 resultant components using K-means clustering technique using SPSS. Normally SPSS adds a class variable for each case indicating its assigned group. ...
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0answers
490 views

k-means quick cluster analysis error in SPSS

I am doing a k-means cluster analysis for 6 component factors obtained by PCA. For centers and seeds, I have carried out a hierarchical cluster analysis. When I run the k-means cluster analysis, i get ...
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2answers
717 views

What test do I use / how do I show in the analysis that I measured everyone twice?

I have already asked a question on this forum about this, but as I changed my experiment a bit and I am still confused. I conducted an experiment in which 25 men and 25 women listened to an ...
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2answers
647 views

Interpreting average linkage clustering results in SPSS

I am trying to cluster 6 PC scores for a 1600 cases data (so its a 1600 x 6 matrix). I am using average linkage clustering technique that would be followed by a K mean clustering. The purpose of ...
2
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0answers
328 views

Multiple imputation using SPSS

I am working with a database with missing data. I have done "Roderick J. A. Little’s chi-square statistic" and knew that my data are not MCAR. However, I know don't have can I determine if there are ...
3
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1answer
2k views

Calculating principal component scores after PC analysis

I am carrying out a study to find out meteorological patterns using daily met observations including around 30 met parameters (each day is a case with 30 variables). My methodology includes carrying ...
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2answers
2k views

Forecasting stock prices time series based on independent factors using ARIMA model

I am trying to forecast time series of stock for a particular case in which closing value of the stock depends on independent factors which is in which infact another time series. Situation is like I ...
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3answers
3k views

How do you apply a linear regression built in SPSS to new data and generate prediction intervals

I am trying to use SPSS to build a linear regression on historical data (dependent and independent variables) and then apply this to new data (independent variables only) to generate predicted values ...
2
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0answers
971 views

How to perform Fisher exact test in SPSS?

I've collected around 10 numbers of ants from a colony and introduced the same numbers of ants to the same colony (say Colony-1) at their entrance to see their behaviour (whether they accepts or ...
8
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4answers
275 views

Internet statistics resources suitable for psychology students doing research

I am working on a new webpage for my part-time job as a methodological/statistical consultant for (psychology) students at my university. On this website I would like to place several links to online ...
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1answer
884 views

Why is a regression model of portfolio return giving smaller adjusted R-square (i.e., negative) than expected?

I have a question for adjusted $R^2$ given a specific regression model. I am doing a project on January effect and I have a model from some journal using $$R_i = a_0 + a_1D_{\mathrm{Jan}} + ...
6
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1answer
127 views

Getting an average measurement based on two raters for cases where data is missing for one rater

Context: I'm investigating behaviour in a clinical study involving children. I had both parents and teachers completing questionnaires to inform an understanding of the same underlying constructs, ...
4
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1answer
4k views

Factor analysis problem — singular covariance matrix?

I'm having trouble performing factor analysis on my dataset. When I perform the factor analysis in SPSS (default settings), it works fine. Problem is, I need to do it programmatically (in Python). ...
2
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1answer
657 views

Can SPSS perform chi-square test on an existing contingency table?

I understand that SPSS can create a contingency table, and at the same time perform the chi-square test. However, is it possible that when we already have the contingency table, to have SPSS do the ...
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3answers
13k views

How do I create subscales based on sets of items in SPSS

I have a 37-question scale, where each item belongs to one of four scales. The items for each scale are interspersed. How can I compute a scale score for each of the four scales? I need to be able ...
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0answers
2k views

How do I run a Mixed Model repeated measures analysis in SPSS to evaluate intervention effect while controlling for school?

I am trying to evaluate the effect of an intervention. I have a group-randomised rct design and have established that I have a design effect and therefore need to control for school. So far I have ...
2
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2answers
546 views

How to examine group differences on several 5-point items using SPSS?

I am trying to analyse a group of 4 questions that are on a 5 point scale. I need to group the answers for each question based on age. There are three different ages. How would I go about doing ...
2
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1answer
376 views

Variance based on given frequencies using SPSS

I'd be too happy, if someone could post a code snippet, which explains how to compute mean and variance of a set of records, which contain frequencies? Suppose we have records like (FORMAT F) ...
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1answer
4k views

Unexpected singularities in the Hessian matrix error in multinomial logistic regression

I have been doing multinomial logistic regression analysis using SPSS 19. I have encountered the following problem when I run the analysis procedure: "Unexpected singularities in the Hessian ...
2
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2answers
984 views

How to get a redundancy index when performing canonical correlation analysis in SPSS?

I am trying to perform a canonical correlation analysis to investigate the relationship between attitudes (14 variables), perceived consumer effectiveness (6 variables) AND Intention to dine (DV) 14 ...
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1answer
22k views

Working with Likert scales in SPSS

I performed a survey using a Likert 1 to 5 scale (totally agree/agree/neutral/ disagree/totally disagree) on 12 questions which are split into 3 statements which the respondent places a value of ...
4
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1answer
227 views

How to assess differential risk of disease across three groups after adjusting for other risk factors?

I have 3 different groups: A, B, and C: A (has a medical condition) has 30 entries B (another medical condition) has 31 entries C (control group) has 55 entries All participants have information ...
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1answer
325 views

Compare means of different variables

I've got more than 20 (10 point likert scale) variables with more than 1000 entries each. What I want to do is compare the means of the answers on the questions. A one-way anova seems suitable for ...
3
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2answers
16k views

How to compute the standard error of measurement (SEM) from a reliability estimate?

SPSS returns lower and upper bounds for Reliability. While calculating the Standard Error of Measurement, should we use the Lower and Upper bounds or continue using the Reliability estimate. I am ...
5
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2answers
621 views

Longitudinal relationship between chocolate consumption and happiness: repeated measures ANOVA?

I am using SPSS and having some trouble with a research question which is analogous to the hypothetical question: Is there a longitudinal Relationship between Happiness and Chocolate Consumption? ...
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4answers
5k views

Comparing logistic regression coefficients across models?

I've developed a logit model to be applied to six different sets of cross-sectional data. What I'm trying to uncover is whether there are changes in the substantive effect of a given independent ...
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3answers
35k views

AVE & composite reliability with SPSS

I have some issues with an exploratory factor analysis. Can anybody please tell me how to calculate the Average Variance Extracted (AVE) and the Composite Reliability from two factors, each with ...
4
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0answers
1k views

How to assess mediation effect in multinomial logistic regression?

I wonder if it possible to include a mediation effect in multinomial logistic regression. I have a categorical (3 categories) outcome variable and four predictors (all continuous). I expect one of the ...
4
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6answers
542 views

How to assess effect of intervention in one state versus another using annual case fatality rate?

I am a beginner in statistics with just basic knowledge. I have these data: cases, deaths and CFR (Case Fatality Rate-deaths per 100 cases) of a disease for 17 years (1994-2010) from 2 neighbouring ...
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1answer
1k views

How to do Chow test for constancy of parameters across 2 groups

I am a beginner in statistics and poor in mathematics. I am trying to to assess effect of intervention in one state versus another using annual data. ...
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0answers
730 views

Multiple response question with duplicated answers

I have a multiple response (categories) question (Q11, ..., Q15). My problem is that the data-entry clerck repeats the answers in the same case. Example: ...
2
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2answers
6k views

How to set up a two-way mixed ANOVA with a covariate in SPSS?

I wanted to carry out a two-way ANCOVA for my data. However, SPSS isn't liking that I have only one IV. I have One IV: Group (3 levels, i.e. 2 experimental groups and a control group), One DV: ...
2
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0answers
390 views

Factor analysis: regression equation and residuals

I have used factor analysis with regression method. I was trying to develop an index using this regression equation by using the output of the component score coefficient matrix (SPSS) generated for ...
2
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1answer
2k views

How can I compare Likert scale data of two clusters in SPSS?

In SPSS, I want to compare two clusters of management sciences department faculty members in two universities. Which test should I use? Can you explain how to do it in SPSS?
6
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1answer
655 views

Derivation of distance in two-step clustering

I am working with the two step cluster process in SPSS Modeler (Clementine) and trying to get a sense for the distance function used. It is a log-likelihood function (as stated in docs) but I am ...
4
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2answers
5k views

How to do meta-regression in SPSS?

I am trying to manage a meta-regression in SPSS17 using the effect size as the dependent variable. I want to explore if my independent variables affects the effect size. Some small practical ...
5
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2answers
6k views

Is automatic linear modelling in SPSS a good or bad thing?

In SPSS Version 19 there seems to be a new feature called Automatic Linear Modelling. It creates a 'Model' (which is new to me) and the function seems to combine a number of the functions that is ...
2
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2answers
4k views

Egger's test in SPSS

How can I conduct an Egger's test using SPSS17? For each study included in the meta-analysis I know effect size and sample size of patients and controls groups.
2
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2answers
5k views

Regression with Pooled data in SPSS

Context: I have "pooled data" with time and cross section dimensions. It is unbalanced data without a full range of time observations for each cross section of observations. It is kind of like ...
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1answer
1k views

How to detect patterns between fields of a distribution in SPSS?

Suppose I have the following simplified distribution: ...