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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1answer
145 views

Statistical analysis of relational database: is it possible and how?

I have been struggling with flat file databases and corresponding statistical packages for almost 20 years now (from Excel to SPSS, then Stata, and currently R). However, I have always had to convert ...
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0answers
11 views

SPSS Friedman post-hoc - determining best classifier

I'm a newbie, so sorry if the question is too straight forward. I'm comparing 5 algorithms on 10 different data sets. In SPSS I did a Friedman test, and the null hypothesis is rejected. Now I would ...
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0answers
26 views

comparing survey responses

I have requested 30 participants to answer the same question about 100 images: "How easy is it for you to recognize this image?" on a scale from 0 to 100, where 0 is easy and 100 is difficult. I want ...
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0answers
21 views

Correlation between Ordinal scale and multiple response question/ tick all that apply

I am trying to correlate the Ordinal scale variable, that is: Mother's education( Lower, Medium, and High) with the "career choice question, with multiple response option (tick all that apply).... How ...
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24 views

SPSS - Correlation between ratio (age) and a nominal choice (A or B)

My project group and I have conducted an A/B test for a class on our university. The respondents were asked to fill in their age and had to choose between two options: Design A or Design B. I want ...
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1answer
45 views

Continuous variable vs. Nominal variables

I have a file with a continuous variable Y, and a set of 20 binary variables (yes/no). I wish to do the following two tasks: To find which of the 20 variables are related to the variable Y, i.e., ...
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44 views

Binary logistic regression: all (B) at .000? (SPSS)

I am a master's student with no stats background! In the 'Variables in the Equation' output I have the following: ...
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0answers
63 views

Analyzing Likert Data for Correlations Between Grouped Items

I'm analyzing data from a 1-5 Likert Scale, and I'm not sure which test to use (I'll be using SPSS). My issue is that I'm not trying to determine the correlation between all items, but the correlation ...
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0answers
13 views

What makes for a “repeated measure” when using LMM?

I am conducting a LMM in SPSS and seem to gotten turned around. I have 3 time points and 2 treatment groups. But where does one specify the time points? Options seem to include: Specifying "time" (...
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0answers
9 views

LMM: Different findings in tests vs. estimates of fixed effects

In a nutshell: If I run a LMM (2 treatment groups, repeated measure of time--at 3 time points), under my Type III tests of fixed effects, my F-statistic is significant at the p<0.05 level. However,...
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0answers
27 views

What analysis should be applied to this survey?

I conducted a survey where I presented the participants a advertisement strategy. They could answer the questions: a) What is your general acceptance b) Does your acceoptance increease when X (for ...
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22 views

LMM Modeling F vs t statistics (and time)

I am running a linear mixed model analysis in SPSS. 40 participants, 2 treatment groups, each assessed at 3 time points (that varied between participants, so everyone got assessed at pre-treatment, ...
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2answers
67 views

Ordinal or binomial regression?

I have designed a question and now intend to use SPSS to analyse the results: My dependent variable is: intention to vote. Yes or No. My independent variables are: a series of question ranked on a ...
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1answer
16 views

What tests to analyze the following hypotheses with nominal data?

I have a set of questionnaire data to analyze the working culture for respondents. (There are four existing cultures; a,b,c and d) Variables including Gender, Organization, Public/Private Sector, ...
2
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0answers
50 views

Can Cochran's Q test take a 3 level nominal variable as the response (instead of 2)?

I conducted a study using within-subjects (repeated measure) design for collecting nominal data. I have been reading a lot closet I get for a suitable test is Cochran's Q test since I have repeated ...
1
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1answer
18 views

Need to analyse missing values + difference in peaks

I am currently working on an analysis that compares heart rate data from multiple devices. In order to do this I recorder all the raw data in a table. Currently I am writing a script that will parse ...
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0answers
27 views

What statistical method should I use to model data?

I am trying to model a continuous numerical variable using a binary fingerprint (0 and 1)- I have used decision trees to model this, is this the best method to use? If not, what method would be best ...
2
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0answers
71 views

How to incorporate weight into linear regression in SPSS

I would like to know the proper procedure to execute weighted linear regression analysis. I have come across different tutorials about weighing in SPSS, but can't distinguish which is appropriate. ...
0
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1answer
44 views

Ranking questions based on how many participants answered “yes”

I have some data from a survey. In one question of the survey, participants were asked to choose one of nine objects from a given list. They then answered several "yes" and "no" questions about that ...
3
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0answers
15 views

Clarifying which ANOVA to use

This is a bit complex so I'll try to explain as succinctly as possible. I'm doing thesis testing and I need to make sure I'm getting it right! Basically, all participants underwent a decision task, ...
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1answer
31 views

Confidence Interval for prevalence

So I have the prevalence of lets say people who drink in a sample I collected. I know the total number of the population that was sampled. How can I figure out the 95% CI? Edit: For anyone looking ...
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2answers
30 views

What type of analyses can be used to predict a non-normally distributed DV?

My data set includes 435 randomly sampled cases; on the DV 406 participants report "no likelihood" of the DV (one score) and 29 participants indicated "some likelihood" of the DV (range: 10 points). ...
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0answers
8 views

Factor Analysis_number of factors in the suggested model is larger than in SPSS"s result

Based on the previous theories/research results, I build up my model research which includes 12 variables (11 variables are measured by at least 3 items for each of them, and a single item is used to ...
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0answers
23 views

What measurement level would binary data be?

I'm using decision trees on SPSS, and I'm not sure what measurement level my data should be in. The variables I am modelling are binary (0 or 1), and I don't know whether that would be classed as ...
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0answers
22 views

is it necessary to create dichotomous dependent variables to test for proportional odds for ordinal regression?

I have a data set that contains variables collected using a set of likert scales. I want to do a separate ordinal logistic regression with age, gender, and income as the independent variables and each ...
0
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1answer
56 views

Negative Binomial dispersion parameter in SPSS

I am working in accident prediction modeling and I'm using SPSS Generalized Linear Model procedure with Negative Binomial distribution and Log Link Function. Does anyone know the form in wich SPSS ...
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0answers
19 views

Hierarchical Multiple Regression & Partial or Semi-partial correlation

When conducting a hierarchical multiple regression, I understand that all covariates are entered into the first step in order to control for them. However, does SPSS control for the covariates using a ...
2
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1answer
50 views

How to perform ordinal regression with rank-based dependent variable?

I have a dataset I'm about to use for some preliminary testing. However, I've stumbled onto a puzzle which I cannot seem to figure out. https://drive.google.com/file/d/0BzfbOrk7Ans7UGdEbzZtR2NqT0k/...
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0answers
12 views

Negative Cronbach's Alpha

I run the Cronbach's Alpha based on the result of the Exploratory Factor Analysis, and 5 factors found. 1st is positive with Alpha, 2nd is low with Alpha, 3rd, 4th and 5th are having the negative ...
0
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1answer
6 views

Variables in the measure column

This may sound a simple question but I just want to confirm. Is ID of participants continuous, nominal or ordinal data?
0
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1answer
67 views

How to handle empty data in linear regression?

This question may seem like a duplicate but I haven't found quite another one that fits my case. So I am trying to run a linear regression on some variables including 1 dichotomous IV (Tool) that is ...
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0answers
15 views

violation of independence assumption for comparison of means

I have a binary dependent variable (following a pattern by my subjects or not). I want to test the relationship between a characteristic of subjects (i.e., personal innovativeness) - categorized into ...
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0answers
20 views

Multiple imputation in SPSS with PMM does not result in imputation of observed values

I'm running a multiple imputation in SPSS version 23 and have chosen PMM (Predicitive Mean Matching) as method, which should result in imputed values matching an observed value but it does not as ...
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1answer
43 views

change scores as predictor variables in a repeated measures multilevel model

I am using SPSS mixed to create a longitudinal multilevel model. Level 1 is observations and Level 2 is participants, so observations are nested within participants. I have multiple continuous and ...
0
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1answer
38 views

Reverse Code for Factor Analysis

I have done my survey, and now I need to do the data analysis. However, I am not sure whether or not I need to do the reverse code at the first step before I can do the remaining analysis. There are ...
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0answers
15 views

Multiple regression: forcing y-intercept=0 improves R^2, is this correct/possible? [duplicate]

I have been running multiple regressions in Excel successfully (using the Data Analysis Toolpak) but when I run the same regressions and force the y-intercept through 0, the R^2 values are very ...
0
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0answers
16 views

What does it mean if your Mean Squares and F value are very similar?

I am running three separate MANOVAs in SPSS. When I run my tests the results for the tests of Between-Subjects Effects shows that my Mean Square and F are very similar across all the variables I am ...
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0answers
82 views

Two-way ANOVA in spss; how to activate “Equal variances not assumed ?”

I got a good solution from the previous question at here and was very helpful. I'd like to say thank to Horst Grünbusch again for his kind help. Following is the previous question; Two-way ANOVA for ...
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1answer
254 views

Two-way ANOVA for data with homogeneity of variance is violated

I'm currently doing a biomechanical tissue study and want to run a two-way ANOVA. Here is how my data look like: Independent variable #1 : Treatment or Non-treatment Independent variable #2 : ...
0
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3answers
79 views

Regression coefficients seem to have the wrong sign; can I force them to have a specific sign?

I'm working with some real world data and the regression models are yielding some counterintuitive results. Normally I trust the statistics but in reality some of these things can not be true. The ...
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0answers
18 views

Specifying an HLM model in SPSS (ranking data)

In SPSS, I am receiving the error: The final Hessian matrix is not positive definite although all convergence criteria are satisfied. And when looking at the output, it is telling me that the ...
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0answers
21 views

SPSS Autocorrelation, Cross correlation, Mulitple Imputations [closed]

I'm wondering if someone can help? I want to combine multiple imputed data sets. Is there a way to determine the pooled autocorrelation coefficients and standard errors in data where there are 10 ...
0
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1answer
52 views

p value in SPSS correspondence analysis

When I did a correspondence analysis to two ordinal data variables with each having six categories I get this table from SPSS. What does this p value indicate? Does this mean there is no ...
0
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1answer
43 views

Interpreting biplots in correspondence analysis

I am reading the book by correspondence analysis in practice by Michael Greenacre.It has the following example. How do we find what row profiles are associated with column profiles. In the book it ...
0
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0answers
109 views

outliers in Likert-sacele data

I have some data with Likert scale (1-5). In the boxplot, SPSS report some outliers (although the value is within the 1-5 range). As I read so far, removing outliers on Likert scale data is arguable. ...
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0answers
22 views

Three-way ANOVA with repeated measures

I want to know where to place independent variable that is repeated for all observations, that has three levels. I have five observers that ranked their stress level in different conditions (12 ...
0
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1answer
23 views

Repeated measures ANOVA or MANOVA (SPSS)

Statistical help needed. I have an experimental design of two independent groups (pregnant/non-pregnant), in which each person has described past memories and future episodes on different variables on ...
0
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0answers
13 views

Can we multiply two observed items and use the composite item as single input variable for CFA/SEM analysis

Please tell if I can multiply two observed items and use the composite item as single input variable for CFA/SEM analysis. What term is used for this act of multiplying of items in SEM lingo (like ...
0
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1answer
41 views

Analysis of count data (density per area) using Generalized linear model

We are applying a GzLM (using SPSS) for analysing the effects of two fixed categorical predictors (habitat type (2 levels) and seasons (4 leves), and their interaction, on data regarding counts per m2 ...
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0answers
21 views

spss, how to enter the covariates for adjustment..?

I Spss, how do you Adjust for two binary variables, "gender" and "age" (<24 >23)? The primary covariate is a continuous variable with a binary dependent. Is it correct to insert age * gender or is ...