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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Decision Tree Giving Impossible Splits

I ran a decision tree in SPSS, using the CHAID method. The result was a tree with many nodes. So of the splits were impossible. For example, for a variable that is from 0 to 10 (in %), a split was ...
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9 views

SPSS | Repeated-Measures ANCOVA | Covariate

We are performing a RCT with 4 groups (1 control + 3 experimental), where we measured physical activity (PA) at baseline, post-test and follow-up. Although we have done stratified randomization, the ...
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13 views

Generalized estimating equations - Multiple binary responses per condition (spss)

I have a repeated measures design. Each participant has two visits, one on placebo, one on drug. The task has a number of conditions. 'Target' has 2 levels, MS and RNG. Within the Target condition ...
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1answer
14 views

How can I export PCA output data in SPSS? [on hold]

I have performed a PCA to reduce the number of variables in my dataset. Now I want to have new dataset with reduced dimension to perform further regression analysis with other variables. How can I do ...
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9 views

SPSS data management [on hold]

grateful for any help! Here's the background: I'm using SPSS In my data, each row is an individual's appointment Each row has an identifier for the individual (SSN) Some rows have demographic data ...
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16 views

How to analyze technology acceptance model hypothesis with regression analysis in SPSS

I want to ask how to do regression analysis using SPSS with my survey data. My survey data consist of 15 question items which belong to 4 groups: Perceive of usefulness, Perceive of ease of use, ...
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15 views

Data Aggregation Using ICC(1) & ICC(2) & Rwg

I am currently working on a thesis in order to graduate, and I need help to understand how to justify aggregation. My issue is that I don't quite understand what is require to do to test ICC(1), ...
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1answer
25 views

the graph of log(-log) for Cox model on survival analysis

I'm studying Cox Regression model on Survival Analysis. While testing validity of Proportional Hazard model, I will use log(-log) graph method in SPSS. First of all, I mention which procedure I'm ...
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7 views

select the variables in the eqation binary logistic in spss [on hold]

I have run binary logistic spss in order to check the significance in 9 categorical predictors in my master theses. When comes to output in the box of variables in the equation i dont know to what to ...
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1answer
35 views

What to do with negative ICC values? Adjust the test or interpret it differently?

For my graduation thesis I am doing a study for the test-retest reliability of the tendon thickness of a particular muscle. So this study contains one rater and 70 subjects who have been tested at two ...
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18 views

SPSS - how to perform several univariate binary logistic regression analysis [closed]

I have a simple question about SPSS. I have a dataset in which I want to identify variables (among 154) which are associated with my dependent variable (two outcomes possible). To present the results, ...
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14 views

Auto-correlation Assumption

I am testing the auto-correlation assumption of OLS. My study is conducted on the most active companies on the Egyptian stock exchange over a period of 5 years. Not all companies included in the ...
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1answer
18 views

Multinominal vs Ordinal regression

What is the difference between ordinal and nominal regression? If i want to run driver analysis after regression and have 3 variables, the DV is 5 point scale question with options "Very good, good, ...
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20 views

Specific Differences B/T SPSS Grad Packs

I have been using the Trial Version of IBM's SPSS Statistics Desktop v. 24 I would like to purchase the most affordable option that enables a few but very specific features my research requires. ...
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58 views

Standard error explanation [closed]

In which direction and how far away, in terms of standard errors, is the estimated  difference ( Diff x ) in Case 1 from the hypothesised value. So what I've done is calculated t0= estimate - ...
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5 views

SPSS Syntax - Identify duplicate responses and systematically identify cases to keep [migrated]

I have a large set of survey data in SPSS where around 15% of respondents answered the survey more than once (this was not intended). I have formulated a systematic method to determine which cases to ...
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27 views

Identical mixed models in SPSS and R nlme, with different degrees of freedom. Which to trust and why?

I am analyzing a multilevel dataset with an AR(1) error structure and random intercept and slope. I fit what I believe is the exact same model in SPSS and R- my coefficients and standard errors are ...
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73 views

R vs SPSS - simple effects analysis in mixed 2x2 ANOVA scheme - same data, different results

I prepared a mixed 2x2 ANOVA design analysis both in SPSS and in R. The SPSS script is correct, but in R script there is a mistake somewhere. To test that I generated artificial data from a normal ...
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1answer
18 views

what's the difference between weighting and transforming?

In regression analysis, what's the difference between weighting and transforming when it comes to spreading residuals? For example, we need to weight the model $y=ax+b$ by $1/x$, isn't it just ...
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21 views

Setting Linear mixed model for within-subject crossed factors

I have problems in undertanding how to correctly run a mixed linear model. I have done an experiment to compare three groups (1 between-subject factor); for each subject, 2 sensory stimuli are given ...
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1answer
48 views

Linear regression with unbalanced dummy variables + not normally distributed residuals

I am conducting a multiple linear regression analysis in SPSS. My DV is a score between 0 and 6, and my predictors are: one dichotomous nominal variable (native vs. non-native speakers) one ...
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34 views

Significant model but not the predictors? (Logistic regression) [duplicate]

I'm doing a binary regression, with two predictors one binary and one continuous. I'm using the enter method. I want to know if my model can be significant when I compare it to the model with only ...
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17 views

I have two independent variables ( 1 categorical, 1 continious) and one dependent varrible

I want to measure how cultural stress impacts male and female graduate students` level of marital satisfaction. But I am not sure what is the best analysis test in SPSS. Both cultural stress and ...
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65 views

How to model a 2x2x2 dataset for a 3 way repeated measures ANOVA analysis

I have some data derived from a 2x2x2 experimental design. There are 3 IV's, each with 2 levels. My DV is reaction time (measured in seconds). I've used a repeated measures design (n=10). I have 20 ...
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16 views

Transformation and/or Winsorizing?

I want to compare two group of 24 and 28 people with t-test on type of activity (5 different's types of activity and a total), later one the same value will be use in regression logistic. If you ...
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11 views

Before/After analysis + controlled variable SPSS. ANCOVA?

I am using trip data from NYC's yellow cabs and the newly introduced citibikes (bikesharing system) in 2013. I have frequencies etc. of the taxi's before and after the introduction of citibike. I ...
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16 views

With or without outlier and/or parametric vs non-paramteric

I'm comparing two group on the number or movie seen in the last mont (30 people in each group). Spss say that there 4 outlier but when I'm lookin with the z score I only find 1. If I do a t-test ...
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29 views

Significance test

I'm doing a test about whether the influence that certain variables have on CEO compensation (such as firm size, performance and some dummy variables) has significantly changed over a period of time ...
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1answer
42 views

Regression for ordinal-scaled variables?

I've got several ordinal-scaled variables (likert-scaled). 1. In my first hypothesis I want to find out the connection between two ordinal-scale variables. Normally I should use the rank correlation ...
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22 views

Categorical variable intercept in generalized linear model

I am running Generalized Linear Model and I have one continuous dependent variable, two categorical fixed factors and 22 continuous independent variables as covariates. When I run the model, I get ...
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23 views

Multiple imputation in different software packages

I'm a grad student and my mentor asked me to write up some multiple regressions that had already been run. The model has around a dozen predictor variables (some dichotomous, some continuous) and 1 ...
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12 views

SPSS: Interpretation of coefficients - OLS

I could need some help interpreting my findings. I've been conducting a linear OLS regression with the following output: I'm trying to discover what the influences are from an acquisition on the ...
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15 views

ANOVA showing 0,00 value while I only want it to show 1 and 2 value

I'm currently working on my bachelor thesis but came across something that I can't fix myself. When running an ANOVA I get the following output: I want to make the 0,00 value gone because now I ...
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24 views

Heterogeneity testing in logistic regression models

We ran 5 separate logistic regression models testing a set of independent variables on 5 different country-specific datasets. Our goal was to assess the relative contributions of known risk factors of ...
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29 views

How to perform a nested or hierarchical ordinal logistic regression in SPSS

I have one outcome/dependent variable that can be ordinal or nominal and 3 independent variables. I have learned so far how to perform ordinal and multinomial logistic regression in SPSS between a ...
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16 views

mean\medians as data points in two way repeated measures ANOVA

I have a table with 12 columns each regarding one combination of three (2X2X3) diffrent conditions in an experiment. Each row (25) represent a subject that did the experiment. Each data point in the ...
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264 views

Strange outcomes in binary logistic regression in SPSS

I did a binary logistic regression with SPSS 23 and I found some strange outcomes. This is for NOACprev until No_Prev_treatment, the last 6 variables. First of all they have very high outcomes for B, ...
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5 views

How to find confidence interval for the mean of a variable between two different factors in SPSS?

I have data that outlines tumor sizes in patients and whether or not they are male or female. I would like to find the 95% confidence interval for the difference in mean tumor size between male and ...
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3 views

Repeated measures with categorical variables in SPSS

I'm looking for some help with my thesis. The research is the following: I asked my respondents to give an alibi for several time periods; a day ago, a week, a month, 6 months and a year ago. For ...
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8 views

RM ANOVA in SPSS - 'Within' or 'Measure'?

I've gathered data on an experiment where my participants performed a task with 3 blocks. In each block, there were 20 trials, each offering them a choice between one of four options. So for example, ...
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17 views

Independent t tests and unequal same size

Just wondering if when 'Equal variances are assumed', but the number of participants in the experiment are unequal (and the sample sizes are $<30, n_1=24$ and $n_2=25$) is it still okay to continue ...
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10 views

Post hoc ttest in SPSS

I computed a A x B (2 x 2) within subject ANOVA for a given ROI using repeated measures GLM. The interaction between A and B was not significant, but two main effects were detected. Can I still ...
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1answer
70 views

Combining two variables

I have a questionnaire about factors that affect trust in online shopping. The questionnaire is split into 5 topics (such as security, privacy, website design etc.) with 2 questions per factor. I've ...
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24 views

Likert scale - suitable analysis

I'm brand new with SPSS and I have to analyse a likert scale and I don't know what type of analysis are suitable. I have 30 completed questionnaires within 3, 4 and 5 stars hotels. Every ...
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1answer
67 views

Why does SPSS give different p-values in the factorial ANOVA table and the Parameter Estimates table?

I ran a 2x2 ANOVA in which I predicted anxiety from two binary predictors (gender and agegroup). I couldn't understand why the p-values in the Tests of Between-Subjects Effects table did not ...
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5 views

Correlation between different variables with different relations [duplicate]

if x and y are positively correlated and x and z are negatively correlated. Is it implied that the relationship between x and y will be negative??(checked via pearson correlation)
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15 views

How do I covary out a time-variable covariate in a repeated measures analysis?

I'm trying to analyze a longitudinal data set looking at pre- vs post-treatment effects on a single dependent variable. The difficulty I'm running into is that subjects in the group being analyzed are ...
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4 views

What does the results from the parameter estimates option from SPSS' mixed ANOVA mean?

Using the General Linear Model procedure in SPSS, I ran a mixed design ANOVA with one between-subjects factor and one within-subjects factor. I selected the 'parameter estimates' option and got the ...
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19 views

PROCESS macro SPSS: one mediator and three moderators

I have a mediation moderation model with 1 mediator and 3 moderators (between the mediator and DV). I can't find the right model in the templates provided by Andrew Hayes for his SPSS PROCESS macro. ...
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1answer
27 views

Ranking Data Comparison

I'm currently analyzing my experimental data and I have a question about comparing two variables. In the experiment I have a question which asks respondents to rank a set of pictures based on their ...