SPSS (Statistical Package for the Social Sciences) is a proprietary cross-platform general-purpose statistical software package.

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How to identify items answered differently by some factors such as male vs. female?

I want to do something like this: Variable: students (undergraduate, master students, and PhD students) Research instrument: XXXX (20 items) Reporting: The ANOVA analysis suggested that there is no ...
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33 views

When do I use full factorial and when do I use custom when running a repeated measures GLM?

I plan to run a 3-way mixed MANCOVA in SPSS 20. It is a repeated measures study design with... 3 DVs that each subject reported on 10 consecutive days (within subjects variable) and 3 categorical IVs ...
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51 views

Calculate 'order effect'

My experiment has the following setup: Participant completes exercise A. Participant completes exercise B. A counterbalancing design was used to remove (reduce?) the effect of order on the results; ...
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1answer
205 views

Using ANCOVA when the covariate is not normally distributed

I have conducted a repeated-measures ANOVA, but a reviewer suspects that the observed main effect of condition are due to a the difference between hit rates of two conditions (one of them is ...
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176 views

Multiple Hierarchical Regression - Procedure with mediation

I have a set of hypothesis that I am looking to test. The model is as follows: http://i.imgur.com/pdGRiyw.jpg (simplified to X -> M -> Y) ie. I am looking for direct effects from X -> Y, X -> M, M ...
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77 views

How to measure order effects in SPSS?

I need to measure the order effects for my data. I have four questionnaires that were counterbalanced, which lead to 4 different orders. However, for one questionnaire, there are two subscales, ...
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28 views

How to include replicates in linear mixed models in SPSS?

In my study I had 11 radiocollared hares which i gave 3 different treatments. one treatment was the release of stressed hare sounds in combi with red fox sounds, the second treatment was sheepsound ...
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19 views

Which type of test is better to compare difference of one independent variable (3 groups and one control) on a repeated measures experiment?

I have a group of 100 classroom participants, all who have taken a course that included four different lessons (from a single unit). Three lessons were taught each using a different form of ...
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29 views

How to get covariance matrix of the coefficient estimates of compound regression model in SPSS

AFter running regression model in SPSS, I get the compound model: ln(diamter)=1.126*height +3.102. I would like to have the covariance matrix of the coefficient estimates of this model and get the ...
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31 views

Recode Binary to scale Variables

I'm looking to find information to recode a set of dichotomous response variables to preferable a 1-5 scale. I have several response variables which when combined with PCA clearly depict certain ...
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72 views

Running 2x2x2 ANCOVA in SPSS

I need to conduct an ANCOVA on my data. While I've taken a number of statistics courses, I have never come across ANCOVAs and I want to get some feedback on the correct way to conduct this analysis. ...
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19 views

SPSS regression discrete number of outcomes

Patients were asked whether they experienced 6 different health consequences following a procedure. As well as looking at the predictors for each individual health consequence, I am also interested in ...
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1answer
187 views

Logistic regression shows a significant predictor, but a simpler model makes the same prediction

I am currently puzzled by the classification table SPSS produces for logistic regressions (procedure LOGISTIC REGRESSION). I used the block function for that ...
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1answer
653 views

Displaying Ordinal Data - Means, Medians, and Mean Ranks

Thanks in advance for any help. I have some ordinal data that is not normally distributed, so I decided to do non-parametric testing using the Mann-Whitney U Test. I am looking at differences ...
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1answer
182 views
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78 views

Which statistical test within SPSS for a crossover study?

I am trying to analyse data from a simple crossover study looking for differences in fat and carbohydrate oxidation and muscle glycogen depletion in 10 athletes fed either sucrose or glucose during a ...
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85 views

Repeated measures ordinal data analysis SPSS

I'm looking to run an analysis using ordinal data with a repeated measures design, and could do with some advice on how to do so. I'm looking at whether or not extra curricular activity changes after ...
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339 views

Combining variables in SPSS, if multiple regression is appropriate for likert scale

Im looking into how different types of coping strategies moderates the relationship between working and suffering parental stress. In total I have 5 hypotheses, of how the variables correlate with ...
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46 views

Wilcoxon Signed- Rank Test vs Kruskal Wallis vs One Way Anova? Which one to use

I am conducting research to rank the importance of certain elements within a property management framework. Would like to know which test is best to help me rank the items. The methodology is as ...
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139 views

SPSS chi-square output interpretation

Sorry for the dumb question, I need some help with the interpretation of the spss chi-square test outcome. Basically I have two variables: the first one is a binary variable which takes value 1 if a ...
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113 views

Dummy variables in multiple linear regression with SPSS

1) Is effect coding (as opposed to dummy coding) necessary/possible in logistic regression (as opposed to linear regression)? I think the answer to this is 'no' but I would be grateful for your ...
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1answer
108 views

Calculating Cronbach's alpha: Same scale, multiple instances

I'm working on data analysis for my dissertation, and I'm banging my head against the wall when it comes to Cronbach's alpha. I just completed a pretest; after data cleaning, I have 119 valid and ...
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1answer
70 views

IBM SPSS QUESTION: Measure the perception of the respondents

My problem to solve with IBM SPSS is: I have got answers to a question about X topic that contains 15 options of multiple response and I want to characterize the perception of the correspondents ...
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2answers
194 views

How can I model a binary outcomes in time series using logistic regression?

My data has a binary outcome (attack or not attack), day (20 day in repeated measured design) and some covariates (nestling’s movement). The objectives of my experiment are testing the effect of time ...
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1answer
233 views

AIC or BIC for model selection in Cox regression (SPSS)

Does anyone know if there is a method (a macro) to calculate AIC or BIC for a model in Cox regression using SPSS?
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49 views

Compare more than two means

New in statistics and I need your help regarding an easy question I think. I'm running out of time for my assignment so I kindly ask you to help me if possible. I'm running a pretest and the main ...
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27 views

How to analyze data with DV only measured at the group level and moderator measured at the individual level?

This may be a relatively simpleton kind of question to ask, as this forum seems to be rather statistically sophisticated, but I'm rather mixed up right now. I ran a study that involved individuals ...
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23 views

Chi square test and comparisons within this

I'm running chi square on a set of data that consists of frequency, question type, and participant group. I have an overall significant statistic but want to get p values for each question type across ...
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36 views

ANOVA analysis?

I need some help since I'm not that good with statistics. I have to perform a study to know whether different groups of people are willing to buy a product. I've shown 6 different scenarios, thus I ...
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28 views

Enterprise Use of SAS & SPSS and Impact of Open Source Platforms (R & Python) [duplicate]

I'm curious to hear from people that use SAS & SPSS why a lot of the Fortune 100/500 enterprises still use SAS & SPSS despite the high cost of the license. Also would love to understand what ...
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68 views

What algorithm should be used for intelligent route planning system based on drivers experience

I am new here and I'm a student, my project is on machine learning for an intelligent route planning algorithm. Basically the summary of my project is to use a machine learning algorithm and ...
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1k views

Interpretation of output generated by PROCESS macro in SPSS for model with two moderators

I used the PROCESS macro for SPSS from hayes to regress a model where det_mean is the indepedent variable and y_tot the depending variable. I'm testing if this relation is moderated by two variables ...
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1answer
77 views

Please help with an appropriate type of regression to obtain numerical result (SPSS) with categorical data

Please help me to figure out the right approach for fairly straightforward task. Let say, we asked respondents to state 3 most important attributes (over ten) for the one product. Answers were coded ...
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66 views

Pretest-post test and General Linear Models

I have two continuous variables; a pretest and a post test results. They seem to have significance in paired samples; p=.000. However I wonder what caused the post test to be better than the pre test ...
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1answer
1k views

how to compare two percentages to prove for statistical significance

I have problem to compare the two percentages and to get the statistical significance for these two different percentage. I just want to approve whether these two percentages are significant or not ...
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34 views

Which statistics to use and how to organize data

I have a categorical dependent variable, namely the answer that participants gave to a series of items. The answer can be "yes", "no" or "maybe" (x 54 items per participant). There are two independent ...
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1answer
681 views

How to follow up a factorial MANOVA with discriminant analysis?

This is a follow-up to to my previous question: How can MANOVA report a significant difference when none of the univariate ANOVAs reaches significance? I have two IVs with each having three levels ...
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65 views

Conjoint Analysis Simulation SPSS - excluded subjects

With SPSS when I run a simulation with conjoint analysis I got this message: "142 out of 155 subjects are used in the Bradley-Terry-Luce and Logit methods because these subjects have all nonnegative ...
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94 views

Fisher exact test (9x2) vs pearson chi-square (SPSS)

I am doing one analysis where I have 9 different conditions and only two options as outcome. I have done a pearson chi-square test, and in some of the cases I violated the assumption that expected ...
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33 views

Fixed parameter estimates of parent factors in a nested design

Summary: What is happening with parameter estimates of factors that are the 'parents' of nested factors? Data: My analysis involves testing the effect of different parameter settings for automatic ...
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242 views

Pair-wise comparisons for chi square test SPSS?

How do you see pair-wise comparisons for chi square test SPSS? I have 4 groups and one variable and want to see all the significant pair-wise comparisons.
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1answer
254 views

“The EM algorithm failed to converge in 25 iterations”

When I Replace Missing Values - Expectation-Maximization in SPSS, I receive the following message: The EM algorithm failed to converge in 25 iterations. Should the algorithm be able to converge? Can ...
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1answer
63 views

How do you set your own intercept in SPSS? [duplicate]

I am trying to specify the constant in a regression model using SPSS. Does anyone have an idea on how to do this?
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1answer
60 views

Understand mixed models SPSS [duplicate]

On a mixed model on SPSS I got the following results: in the table called "Type III Tests of Fixed Effectsa" ...
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1answer
17 views

Dependent samples but unable to pair individual scores

We surveyed a group of students before an in-school year-long project and after, and want to see if the changes in scores are significant. Data doesn't meet assumptions of normality. Can we use the ...
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11 views

How to analyse categories ranked 1 to 5 between two groups

I currently have 5 categories. I asked two groups to rank activities from 1 to 5: 1 is the most preferred activity and 5 the least preferred activity. How could I analyse this to see if there is a ...
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127 views

How to obtain an exact value of the determinant of a correlatiom matrix when doing PCA in SPSS?

When I perform a Principal Components Analysis (PCA) in SPSS 22 I get a footnote under the correlation matrix which states that the value of the determinant $=.000$. I am not able to display more ...
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2answers
80 views

Is there any possible method to calculate effect size in SPSS mixed model?

I run MIXED command for mixed model analysis of repeated measured data. However, there is no option or menu for estimate power(like partial eta in GLM) in mixed analysis. Is there any method to ...
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108 views

Multiple imputation in SPSS: merge datasets?

I have two sets of data, measured from the same persons. The variables in the two sets are very different. There are some extreme values (occurring at random) in both sets I would like to handle using ...
2
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1answer
147 views

Creating composite vairables in Structural Equation Modeling

I was wondering if you can help me. I want to run a pathway model using composite variables. Each composite variable is made up of 3 or 4 observed items. To create the composite variable to draw my ...