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

learn more… | top users | synonyms

1
vote
2answers
178 views

Correlation and categorical variables

I have a series of categorical variables I have, up until now, been undertaking correlation analysis with. The bulb has now lit up and I'm realising that I've used completely the wrong analysis if I ...
0
votes
0answers
104 views

What is the most appropriate implemented statistical method for marketing mix model with Spss Modeler

I want to use marketing mix models with SPSS Modeler so as to estimate the impact of each marketing activity (tv, clicks) seasonality and promo activities etc. I have 1 year's data. What are the ...
1
vote
1answer
170 views

Significant difference between AIC in generalized mixed models

I have fit several generalized mixed models for a multinomial distribution data in SPSS. I want to select the best one for explaining my data. But comparing the AIC and selecting the lower AIC model ...
1
vote
0answers
108 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 ...
1
vote
0answers
177 views

Holt Winters initialization using backcasting like SPSS

I'm trying to figure out how SPSS is initializing the multiplicative Holt Winters exponential smoothing model using backcasting. Thankfully IBM roughly described their way of doing so .. very roughly. ...
1
vote
1answer
179 views

Mann-Whitney for groups filled Likert scale

My stats knowledge is less than basic, so apologies for possible confusion. I have 2 independent groups (N=14 and N=14) who filled in a Likert-scale based standardized questionnaire, consisting of ...
0
votes
0answers
40 views

Analysing possible effect of categorical response on ordinal response?

I have recently begun to analyse data from a survey where participants rated 64 images of models on a Likert scale and then selected whether they consider the model in-group or out-group. I am ...
0
votes
0answers
217 views

How to deal with a non-significant threshold value in ordinal regression in SPSS?

I am running an ordinal regression in SPSS. I have independent variables on nominal and ordinal scales. My dependent variable is ordinal, indicating a level of action, coded 0, 1, 2. Unfortunately, I ...
2
votes
0answers
51 views

User-defined contrast on Generalized Estimating Equations

I am running a GEE on SPSS as well as Stata on choice data with the following structure: Each subject completed 32 trials in 4 ...
0
votes
1answer
113 views

How to analyse cross-cultural similarity in groups with very different responses?

There are 40 audio files (classical music) and a choice is given to select an answer among 9 emotions. Out of these 40 audio files I compute 8 variables and these variables are connected to the 9 ...
1
vote
0answers
26 views

How to test for differences between groups over time when N is less than the number of levels

I have done a live cell imaging time course over 24 hours, and have a result for each hour. I have 3 experimental groups and 1 control group. What I want to know is if any of the experimental groups ...
0
votes
1answer
235 views

Multivariate analysis for factors affecting survival

I am doing an audit looking at survival for a particular cancer. I have done a univariate analyses and Kaplan-Meier curves using Prism Graphpad looking at prognostic factors which may affect survival. ...
2
votes
4answers
2k views

SPSS: “Weight cases” by multiple factors, by taking the product of weights?

My understanding is that a sample can be adjusted based on a known population using the "Weight Cases" function in SPSS. What is the proper procedure for weighting by multiple factors? Let's say I ...
4
votes
1answer
493 views

What to do when a Mann-Whitney U assumption is violated?

I'm using a M-W U test to analyse some Likert scale results I have, as my data is ordinal. One of the assumptions that keeps on appearing on references is the following: "both distributions must be ...
1
vote
1answer
346 views

How to interpret the SPSS output for MANOVA?

I am struggling with the interpretation of my MANOVA in SPSS. I have two DV and one IV (age), in the MANOVA table Wilk's lambda is .053, thus not significant at a alpha level of .05. When I then look ...
0
votes
1answer
126 views

Personality traits as fixed vs. random effects in a repeated measures mixed model

We performed a randomized controlled trial. I am interested in anxiety levels (dependent), treatment (meds vs. ultra-dance therapy), and personality variables (agreeableness, neuroticism, weeaboo). We ...
0
votes
1answer
98 views

Hypothesis testing with latent variables

Summary: I created a model that tries to explain success factors in crowdfunding initiatives. I collected the data by scraping it directly from the crowdfunding platform. That of course limits my ...
1
vote
0answers
177 views

Kendall's tau for holdouts low and not significant - Conjoint

I have done my Conjoint Analysis (fractional factorial design) but when it comes to validating the model, it shows a Kendall's tau for Holdouts of 0.33 and not significant. But Pearson's R and ...
0
votes
1answer
401 views

Continuous and categorical variables in SPSS GLM

I'm currently writing the results part of my thesis and I'm extremely bad at statistics. My variables are Dependent variable: Response time (with two levels) Factor: manipulation variable (exposing ...
1
vote
1answer
564 views

Multiple variable comparison line graph SPSS

I have 6 variables, three of which are median splits and three of which are continuous measures of 'such and such', each of which is measured on the same 5 point scale. I am trying to produce a graph ...
3
votes
2answers
3k views

Intraclass correlation coefficient interpretation

I'm having a look at the intraclass correlation coefficient in SPSS. Data: 17 participants rated two lists of 9 & 7 items from 0 to 5 (0 being unimportant and 5 being very important). All ...
1
vote
1answer
108 views

How to exclude covariates of a Cox model?

I am using the Cox regression model to forecast failures of machines. I have several possible covariates. I ran the analysis in SPSS. The method I used to add covariates was backward stepwise (Wald). ...
1
vote
1answer
184 views

Likert scales: analyzing scales or items?

I am writing an essay based on a survey I made. First I set my hypothesis = Who is an impulsive buyer tend to be loyal to shop X. Than using "marketing scales book" I set different scales for each ...
4
votes
0answers
139 views

Interpretation of mixed model with repeated measures

I have performed the following experiment: Two genotype groups of two different ages were monitored in the presence of three drugs one after the other. So, each subject after a control period received ...
1
vote
0answers
76 views

How to analyze category responses

In a survey questionnaire I asked participants to give a priority ranking to the question "What factor motivates a lot for wringing out loyalty, and productivity?", with the following choices: "Good ...
0
votes
0answers
91 views

How to fit a multiple regression model that takes into account 50 days of each individual's history

I am using simple linear regression to predict the number of days of school a single student might miss after 250 days using their cumulative daily attendance data over the first 50 days of the ...
1
vote
2answers
747 views

How can you implement a two-way ANOVA with nesting in R or SPSS?

I currently am conducting a study where I have three variables: one that is binary, and two numerical ratio variables. Each of the subjects in my study has values for each of the three variables. ...
0
votes
0answers
99 views

Survey data analysis in SPSS and in Stata

When the survey design is complex, say, a 3-stage stratified cluster sampling design, then we have to use sampling weights. When I use SPSS then I see that the sampling weight it uses is the raw ...
0
votes
1answer
154 views

Compare the slopes and intercepts between 2 variables in SPSS

There are 4 groups, each one having two 2 variables, X and Y. I am trying to understand the regression between them. For X variable I have 2 categories, positive and negative. I am not understanding ...
0
votes
0answers
102 views

Hierarchical clustering output in spss to determine no of clusters?

I have applied hierarchical (agglomerative) clustering in SPSS on my 100 records dataset. The rule says that 'where the distance coefficients makes the larger jumb that point determines the no. of ...
0
votes
0answers
91 views

Probing of 3-way-interaction with one continuous and two categorical variables

I have a model for multiple moderated regression with payment (continuous) as the DV, one continuous predictor (neuroticism), and two binary categorical ...
0
votes
0answers
166 views

Path coefficient above 1, but differential separate predictions of outcome variable.

How can two predictor latent variables have a standardized path coefficient of 1.06 (SEM: Amos: 5 indicators for the first latent variable, 3 parcel indicators for the other predictor originally from ...
0
votes
0answers
105 views

Nonparametric statistical test for analyzing 2*3 between-subject design's main & interaction effect

I am now having trouble analyzing my data since I got stuck on selecting the proper statistical test to use. My data is a 2$\times$3 between-subject design data. The two IVs are one norminal(with ...
0
votes
0answers
24 views

Technique for neurovascular experimental analysis?

I'm trying to run statistical analyses on the data I got from some neuroscientific experiments. Because I don't have a solid math background, I would really appreciate any input as to what tools to ...
1
vote
2answers
670 views

Interpretation of coefficients in multiple regression without intercept

I am trying to interpret the SPSS output from a multiple hierarchical regression where the intercept has been eliminated because it is not significant. I have read previous discussions about ...
2
votes
2answers
865 views

Correlation between Likert-type item and yes / no question

I am trying to find correlation between job satisfaction and intention to stay. In order to do so, I am trying to find correlation between Likert scale (agree, disagree, strongly disagree) and ...
0
votes
1answer
1k views

Recoding variables to combine two questions in SPSS

In my questionnaire,I asked these two questions: q1. Have you ever been on a holiday that included a visit to a film location? Yes (Go to next Question) No q2. Have you ever been to a film ...
2
votes
1answer
96 views

Adding variables to the model one by one, or at the same time

What are the benefits of adding the variables into a model one by one, as compared to adding them all at the same time? As I see in most research, the first model that is tested is consisted of all ...
2
votes
1answer
1k views

How to test the effect of pre-post, treatment-control intervention with three age groups, two dependent variables and gender effects?

The hypothesis of my research project is “a certain training improves the ability in Subject A” . Sample details Groups: 1A (25), 1B (21), 2A (25), 2B(27), 3A(23), 3B (23). The number within ...
1
vote
1answer
177 views

Comparing two slopes

I have a dataset structured as follows: ...
0
votes
0answers
50 views

Arranging a dataset for a 2-way between-subjects Mancova

I'm not quite sure whether my dataset is correctly arranged in SPSS to run a Mancova. I have got two pairs of categorical IVs, 9 measures (variables) for one pair of IV and 12 for other categorical ...
0
votes
1answer
583 views

How can I test Control variables within a mediation analysis?

In my Masters thesis I do a mediation analysis with Multiple Regression Analysis. So I make use of the Baron & Kenny method for testing mediation. I also want to control for some variables. For ...
3
votes
0answers
122 views

Is it possible for my mixed model results to be the same as those for a repeated measures ANCOVA? Why don't I get the same results? SPSS

The experiment: Two groups of children perform tasks with three levels of difficulty at two different time points and brain activity is measured. All of the children perform all of the tasks and do so ...
0
votes
0answers
58 views

2 step cluster analysis

I am conducting cluster analysis, using SPSS function for two step cluster analysis. No matter which variables I choose for the analysis (tried eliminating some, adding some more); I'm ending up with ...
0
votes
0answers
83 views

Goodness of fit vs. significance

If you had two models - one with a better fit, and one with predictors of higher significance - which one would you choose? Keep in mind that both models are considered a good fit. One has a 3% ...
0
votes
0answers
81 views

Post-Hoc for 2x6 Mixed Design ANOVA

I have run a 2 (gender) x 6 (A) mixed design ANOVA. While I found a main effect for A, the interaction was also significant. While attempting to run post-hoc through SPSS, it said that I was unable to ...
1
vote
0answers
48 views

Partial $\eta^2$ in multivariate analysis

I wonder why the partial $\eta^2$ values are so small in my SPSS GLM Multivariate analysis. I have 3 DVs and 5 IVs and the sample size is large (n=5000). The main effects and significant but the ...
1
vote
1answer
306 views

Mediation analysis interpretation

I am carrying out a mediation analysis using PROCESS in spss. According to Field a mediation effect occurs if the confidence intervals for the indirect effect do not include 0 - this is the case but ...
1
vote
1answer
991 views

Covariate vs. factors

I have a survey problem where the dependent variable (ordinal) is in Likert-type scale (i.e. 1 to 5 from most satisfied to most dissatisfied) and two sets of independent variables. One set has 7 IVs ...
2
votes
1answer
164 views

Repeated Measures ANOVA with several measures entered together: how to find main effect

I've run a 2 (treatment and no treatment) x 2 testing occasions (pre and post) Repeated Measures ANOVA. In addition, I entered several tests given at both time points, so under the Repeated Measures ...