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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Methods of Spend Outlier Detection

I'm looking to formalise some logic behind outlier detection for spend categories of survey respondents during a trip or event (e.g. accommodation, meals, shopping, etc). Distributions are zero-heavy, ...
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1answer
172 views

Why are discriminant analysis results in R (lda) and SPSS different?: Constant term

I tried discriminant analysis with lda() in R and in SPSS, but the scalings were different, why? N, how to get (Constant) with R like SPSS result? data: ...
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55 views

Computation of factors after factor analysis

I have run a principal axis factor analysis and I want to form scales for each factor. To be more specific, after having run the FA, I would like to select all items that load in a specific factor and ...
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70 views

Back transforming reciprocal transformation for difference between means

Say I have the following datasets which concern normalised masses like this: Set 1: 3.08, 2.79, 3.62, 2.62, 2.85, 2.45, 2.80, 2.62 Set 2: 3.25, 3.14, 3.30, 3.13, 3.19, 3.17, 3.35, 3.35, 3.82, 3.13 ...
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50 views

What statistical test should I use for binary data?

I am a slightly complex dataset, so I'll describe, I looked at medical visits from 2013 to 2014 and compared them to medical visits from 2013 - 2014. I documented each visit as a unique encounter. ...
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35 views

Measuring correlations between 10 nominal variables in SPSS

I am trying to find out how I should measure correlation between the answers to 10 nominal variables (with 0 and 1 as only answer options) at the same time. I can't use cross tables for this because ...
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1answer
48 views

T-test: is the difference of the means in my sample's two subgroups equal to a given difference of means?(SPSS)

I've recently reread the section about t-test, comparing means in two independent subgroups and know the formula, how to compute the t-coefficient. Now I'm facing the question, whether the difference ...
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158 views

Poisson Distribution Analysis in SPSS - Nonparametric, count, repeated-measures data

In relation to a recent post about what analyses to conduct for a data set, I am now asking a related question about the test to run in SPSS. Background information on the data: Repeated measures ...
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1answer
307 views

Non-normally distributed data - Box-Cox transformation?

I have data that is not normally distributed. The problem seems to be that there are too many of one value relative to other values. What I have tried to make data normal: I have tried a log ...
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12 views

What is the best method to statistically test two areas?

I am investigating the difference in childhood obesity rates between Dudley and Brighton & Hove. These areas have similar deprivation rates but very different childhood obesity rates. I am looking ...
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32 views

How to analyse skewed and unskewed data on SPSS?

Study design: I have shown participants a series of photos of themselves vs. other people's bodies (original and manipulated), and asked them to find the original. Their responses were recorded and ...
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12 views

SPSS Repeated measure T-test for calculating efficacy of burning arrows

I was curious how effective the burning vs normal arrows are in the PC game Medieval II against heavy and light infantry. I have recorded some data in SPSS but now I cant get it to do a repeated ...
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152 views

Finding the Significant Differences (with p-values) in a 4x2 Chi-Square Table Using SPSS

In short, I would like to learn how to discover where the significant differences lie within a 4x2 Chi-Square table and report the significant findings with a p-value, preferably using SPSS. Setup: ...
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2answers
78 views

How do I change logarithmic scaled data to linear scaled data?

I am using decibels for my research, and I was told by someone that I cannot perform any statistical analyses on these measurements other than basic descriptive statistics because the data are ...
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0answers
82 views

How to analyze skewed and unskewed data on SPSS?

Study design: I have shown participants a series of photos of themselves vs. other people's bodies (original and manipulated), and asked them to find the original. Their responses were recorded and ...
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0answers
24 views

Two-way ANCOVA with count data— Poisson model in SPSS

I am attempting to compare the number of eating episodes by gender and diagnosis (4 levels), adjusting for BMI and age. I am assuming that a Poisson model would be preferred over a factorial ANCOVA ...
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15 views

Pearsons Chi Squared and z-score question [duplicate]

1) I have a list of who is short or not in a group(by using binary 0,1).I also have a list of where each case is located in region. If I do crosstabs for the calculate the percentage of short(1) in ...
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1answer
66 views

What type of regression model do I need to use?

I am looking at the relationship between the two concepts of psychological strategy (PS) usage and athlete engagement (AE), looking to see if PS predicts AE as a whole and if certain subscales of PS ...
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62 views

Conjoint Analysis - How they do it?

Theoretically what I know that, for doing Conjoint Analysis I have to make a list of all the possible products with five different features utilizing all the combination of different levels (see ...
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13 views

How to model a scale and its component subscales

I am investigating the use of psychological strategies (PS) and athlete engagement (AE) in soccer players and what to predict if global / whole PS predicts AE as a whole using SPSS. I also want to ...
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1answer
27 views

How to run repeated-measures ANOVA when data points per subject vary?

I am attempting to run statistics in the following scenario: I have a list of hospital visits by approx. 60 patients to the emergency room. Each patient gets an EKG done of their heart, and I have ...
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78 views

Contrasts / Post Hoc Tests for three way repeated measures ANOVA

I have three factors A B and C with 2, 2 and 3 levels. A and C have significant main effects, B is not significant, interaction A*C is significant, the others are not. Now I want to know how to ...
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39 views

Pearsons Chi Squared and z-scores question

1) I have a list of who is short or not in a group(by using binary 0,1).I also have a list of where each case is located in region. If I do crosstabs for the calculate the percentage of short(1) in ...
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3answers
88 views

Cohens d effect sizes

I'm using Cohens d effect sizes as a means of providing a magnitude based inference in a study I'm conducting. I just wanted to clarify if I'm correct here: Anything between .0 and .2 is small. ...
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1answer
39 views

How to deal with different outcomes between pairwise correlations and multiple regression

I have different results from a correlation table and a multiple regression model. I know that it is an effect of multicollinearity because correlations up to $.474$ exist between predictors, but this ...
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19 views

working with entire census data of population distribution

i am working on the total population of a state using census data sets, please what statistical techniques can i use to analyse the data to test if the distribution of population within the state in ...
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65 views

Formatting R output to mimic Stata or SPSS or SAS output [closed]

It has been my experience that different academic fields have converged to different statistical software apps as their "standard." E.g., in Economics Stata is very common but virtually unheard of in ...
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39 views

Specifying 'subjects' and 'repeated' options in Linear Mixed Model (SPSS)

This question is probably quite easy to answer for those who work with Linear Mixed Model analysis. My question is the following: I have a repeated measures design, where each participant completes a ...
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56 views

Exp(b) in multivariate Cox regression

I am trying to interpret the results of a Cox regression. I ran a multiple Cox regression analysis of an categorical variable—heart rate including 5 levels. I added covariates that were also ...
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17 views

SPSS Comparing means between groups

I am currently working on a project about the performance of Himalayan mountaineering teams. I want to compare differences between these teams on the basis of the mountain they attempt to conquer and ...
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43 views

How do I deal with split samples for conjoint in SPSS?

We ran a survey of a sample of over 4,000 where we asked about 16 cards (product combinations). To combat survey fatigue, we randomly assigned each respondent 4 of the cards, so that every respondent ...
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42 views

Finding trends from ordinal / likert responses

I have two ordinal variables, ranked on a 1-5 Likert scale, and a categorical variable of age groups. What I would like to is extract significant (or determine and identify the existence of) ...
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61 views

Extracting meaningful demographic data from ordinal / Likert responses in SPSS

I'm currently working on the findings of my Masters dissertation where I've defined hypotheses, created a questionnaire, and then testing whether a relationship exists between different ordinal ...
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2answers
32 views

How to do test the significant difference of CD4 count less than 350 in relation to different races using SPSS

I have a pool of CD4 count from 0 to more than 1000, and all the CD4 counts are respect to different races. So how to only test the CD4 count less than 350 to different races? To see whether there is ...
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1answer
31 views

How to simplify the SPSS Syntax when repeating functions [closed]

I am using SPSS syntax to run multiple UNIANOVAs for multiple variables each time under different conditions (or for different set of cases). I always use UNIANOVA for almost same 15-20 variables ...
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33 views

Regression model estimates vary depending on method of regression selected (stepwise/enter) with same predictor variables (SPSS)?

I am building a model for prediction with around 15 independent and one dependent variable. If I run a stepwise model (I understand the disadvantages of doing this) on the data, I get a set of ...
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72 views

Comparing measurements obtained from >2 devices (Bland-Altman, Tukey mean difference plot)

I would like to compare different measurements in regard to agreement. Quite often this is done using a Bland-Altman plot (also called Tukey mean difference plot) in medical literature. What I would ...
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81 views

Repeated Measures ANOVA SPSS

I have the following predictors: - 2 within subject factors - 4 between subject facors Theoretically, I'm mostly interested in the main and interaction effect between the 2 within subject factors as ...
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1answer
126 views

Wilcoxon Signed Rank Test reports “U” instead of “Z” in SPSS

Given two variables A and B with 35 random data points (generated with Excel in the range of 0 to 1), we applied Analyse -> Nonparametric Tests -> Legacy Dialogs -> 2 connected Samples in SPSS and ...
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1answer
50 views

Dependent questions in SPSS [closed]

I have questions in a survey that are dependent on other questions, i.e. nested questions. How do I enter those into SPSS? Example: ...
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68 views

SPSS Generalized Estimating Equations (GEE) with 2 nested subject variables?

I have an intercept-only model with 1 dependent variable and 2 subject variables (participants and participant groups). Technically, the participants variable should be nested within the participant ...
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142 views

MANCOVA reporting

I just ran a MANCOVA to compare my grouping variable with my dependent variables whilst controlling for my covariates. I am running a descriptive study, therefore already by looking at descriptive ...
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111 views

Inconsistent mediation

I am trying to figure out how to interpret my data where I think I have inconsistent mediation (MacKinnon, Fairchild & Fritz, 2007). Before including covariates: I have a non-significant total ...
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0answers
34 views

Multiple testing correction for 2x2 tables in SPSS

Hi I have 1 binary dependent variable (presence or absence of coeliac disease) and multiple binary independent variables (presence or absence of different symptoms). If I perform a chi square in SPSS ...
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121 views

Interpretation of SPSS output mixed model

I have an spss output, whereby I included the variable education in the fixed as well as random part of the SPSS mixed model syntax. A multilevel model is estimated whereby Level 2 represents ...
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25 views

SPSS output: Change of direction between univariate and multivariate

I am bit lost with my SPSS output. I am doing research on change management and its success factors. I set up a model with two IVs (kommunikation (communication) and Task Scoping). Alter, Geschlecht ...
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55 views

Generate means and std. dev. in a repeated measures ANOVA

I got a repeated measures ANOVA with two timepoints (i.e. variables A1 & A2) as within-subjects dependent variable, and variable B as a between-subject independent variable. In the output (SPSS) ...
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1answer
62 views

Chi-square Analysis for data derived from continuous variables

Let's say I have growth parameters for a population. People who exceed 95th percentile are marked with 1, and people who are otherwise below it are marked as zero. I will then use crosstabs to compare ...
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37 views

SPSS MIXED: Getting estimated marginal means for repeated measures

Any advice for getting estimated marginal means with a within-subject variable? I am looking at the dependent variable SIR over three time points (pre, mid, and posttreatment). My syntax is: ...
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1answer
988 views

What's the proper way to control for gender effect in a repeated measure anova (on SPSS)

I need some help to be sure I am using SPSS right (in this case, putting the variables in their right places). I have a 3 (3 different conditions/groups) x 5 ( time 1, 2, 3, 4, 5) and I want to ...