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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6 views

Does a Split File Datasat need a correction for multiple comparison?

I searched already for similiar problems but couldn't find an answer. I split the file in SPSS by a two-level between group variable (sequence) and then want to perform two ANOVAS on each of those ...
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0answers
11 views

Estimated Survival Discrepancies: Kaplan-Meier vs an Extended Cox Regression

I have a massive data set of about 25000 pancreatic cancer patients; extremely quick and depressing mortality rate. I'm interested in survival differences between three groups--no treatment, ...
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3answers
12k views

My distribution is normal; Kolmogorov-Smirnov test doesn't agree

I have a problem with the normality of some data I have: I've done a Kolmogorov test which says it isn't normal with p=.0000, I don't understand: the skewness of my distribution =-.497, and the ...
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2answers
1k views

Correlation among categories between categorical nominal variables

I have a data set with two categorical nominal variables (both with 5 categories). I would like to know if (and how) I am able to identify potential correlations between the categories from these two ...
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1answer
59 views

Multivariate multiple regression assumptions, how to interpret findings SPSS?

I am trying to perform a multivariate multiple regression in SPSS. I have 5 independent variables and 4 dependent variables. I know it can be done in SPSS using the GLM-multivariate option. My ...
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1answer
31 views

How to get a Variable View in RStudio like in SPSS? [on hold]

One of the things that make it hard to change from SPSS to GNU R is: There is no "Variable View" like in SPSS, no listing of variables you could quickly find a variable name in. This is especially ...
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1answer
125 views

Multinomial logistic regression low classification rate

I am running a multinomial logistic regression with SPSS and I have encountered a problem (?) with my data. I have a dependent variable (DV) with three categories, five independent variables (IV) as ...
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0answers
14 views

SPSS Chi Square goodness-of-fit expected frequencies distribution check

My question is about the Chi Square goodness-of-fit test. Not to be mistaken with the test for association or the test for correlation (both called Chi Square). Let's say I have following variable '...
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0answers
32 views

SPSS Chi square test proportions (less than 5 expected)

Let's say I have a (fictive) sample: White: 25 Foreign: 1 General population: White: 30 Foreign: 9 Now I want to compare if my frequencies do not differ from the population. Normally I could use a ...
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0answers
24 views

How can i analyse percent data using spss? [on hold]

I have those kind of data and i want to enter them in SPSS in order to analyse them. How can i do it? They are secondary data and are percentaged, as you can see. Each row present a different ...
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1answer
338 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 : ...
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0answers
21 views

Multiple regression analysis with 22 data points and 7 independent variables [on hold]

I am working on my thesis and want to do do a regression analysis to find the effect per 'problematic factor' (see attachment) on 'Duration' (see attachment) or 'Costs' (see attachment). Chance here ...
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0answers
113 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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1answer
21 views

SPSS, Multiple Imputation, analysis weight

I was wondering about the possibility to handle sampling weights and multiple imputation when I found the so called "analytic weight" button in the MI setup in SPSS. Now I am wondering: what is the ...
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2answers
14 views

Z-Test and T-test in SPSS custom table - Include 'Total' in comparision

I would like to not only compare columns' proportions and/or means but also each column's proportion and mean against the whole sample (i.e., the 'Total' column). Any way we can obtain that with SPSS ...
2
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1answer
158 views

How to test for mediation with a continuous mediator and DV, but a categorical predictor?

I want to explore whether attitudes mediate the relationship between employment status and intention to apply to graduate school. (See image below). I planned to use the Sobel Test to explore the ...
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0answers
9 views

Mann-Kendall trend test of time series in Spss [closed]

My question is about Mann-Kendall test. I have the need to evaluate data of precipitation to see if the amount of precipitation during last 50 years in my study site is following a trend or not and if ...
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1answer
629 views

Ordinal Independent Variables and Dependent Variable Regression Analysis

I have 3 variables (2 are independent and 1 is dependent). All three variables are measured with questionnaires consisting of multiple questions recorded on 5 point scale. I want to perform regression ...
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1answer
947 views

Post-hoc test in two-way ANOVA

I am doing a two-way independent ANOVA using type of organisational change (5 levels) and job level (7 levels) within the organisation as the factors (in SPSS). I followed Andy Field's procedure (...
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0answers
19 views

In SPSS, what follow-up tests for a three-way repeated measures ANOVA with no 3-way interaction?

For a three-way repeated measures ANOVA: Do I use simple main effects syntax or run t-tests in SPSS in my follow up analyses (pairwise comparisons?) for a non-significant three-way interaction, with 1 ...
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0answers
21 views

Mixed ANOVA: 2 within subjects factors, 1 between subject factor

I did an experiment where I had two groups A (22 subj) and B (19 subj) receiving different treatments, performing a task with 3 conditions, cond1, cond2, cond3, in 2 moments (pre and post treatment). ...
2
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1answer
238 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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2answers
23 views

Indication for potential mediation or moderating relationships

I want to run a regression with many variables. Besides the hypothesized direct relationships between IV and DV, there might be some moderating and mediating relationships (but I don't know which) ...
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3answers
662 views

Is there a limit to the SPSS random number generator?

Will the random number generator in SPSS be serviceable if I need 250,000 random numbers, or will the randomness start to degenerate? Asked another way, what practical limits are there to using the ...
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0answers
21 views

Regarding analysis of likert scale

I am trying to compare whether there is a difference in students' attitude from different types of school. The survey consists of their school type and 21 questions on attitude in 4-point likert scale ...
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0answers
10 views

help on mixed models in spss

I am trying to analyze a complex data set and I got confused. Here is a brief explanation: Everyone has different beliefs, i.e., fate, luck, etc. I identified 5 belief types which I measure with some ...
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2answers
974 views

Correlating time series for 20 regions (SPSS)

I have a question to which I can't find an answer although I spent really awfully lot of time searching. I have time series data for about 20 regions of a country. Each time series covers 20 years. ...
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1answer
198 views

PROCESS macro in SPSS - Analysis for multiple IV?

I have a moderated mediation model with 4 IVs, 1 mediator, 1 moderator, and 1 DV. I can't find the right model in the templates provided by Andrew Hayes for his SPSS PROCESS macro. Can I carry out one ...
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2answers
11k views

What is component (factor) score coefficient matrix in PCA or factor analysis and how is it calculated?

As per my understanding, in PCA based on correlations we get factor (= principal component in this instance) loadings which are nothing but the correlations between variables and factors. Now when I ...
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0answers
23 views

ordinal regression: categorical variable has two 0 coefficients. Why?

I ran a bigger ordinal regression model in SPSS with some scaled and categorical variables. In the output, two of these categorical variables have two 0a as estimates. The "0a" is a SPSS Footnote. In ...
7
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1answer
1k views

Multiple imputation questions for multiple regression in SPSS

I am currently running a multiple regression model using imputed data and have a few questions. Background: Using SPSS 18. My data appears to be MAR. Listwise deletion of cases leaves me with only ...
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0answers
664 views

Box and whisker plot or bar plot with mean and SE?

I am trying to present my data in a meaningful way. To do so, I thought it is a good idea to use a box and whisker plot, because, it shows min, max, median and skewness of data. However, due to ...
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13 views

Interaction Contrasts in SPSS

I am trying to run a 2x2 MANOVA with two sets of categorical independent variables (V1: healthy weight vs. overweight) (V2: binge eating diagnosis vs. healthy controls), on continuous dependent ...
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1answer
458 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 ...
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1answer
2k views

Difference in difference using spss

I have 2 groups of patients (control and treated) and 1 variable measured at two time moments (before and after treatment). Using paired T test I am able to determine the mean (with 95%CI) difference ...
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1answer
9k views

How to calculate sum of squared errors (SSE or SSR) with Stata 12 software?

I have a techincal issue with Stata: I need to calculate the SSE of a regression model, but the automatic output just gives me RMSE; I need SSE of this constrained model because I have to test if this ...
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1answer
572 views

To find significant differences between means using repeated measures GLM

I am new in using SPSS and stuck with General Linear Model [which is just linear model] procedure. I have 8 cognition variables like latency, thigmotaxis, spatial, quadrant, nt quadrant, proximity, ...
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24 views

consistency of a task with varying number of items

How does one measure the internal consistency of a task that is finished at different times for each participant? Most psychometric tests have instructions that inform you that you must finish the ...
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2answers
657 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
19 views

Multi-level analysis in SPSS?

I am struggling to work out how best to analyse a large set of data in repeated measures design. I have 4 main conditions: a, b, c, d. Then within each condition, participants repeat a trial 2 times ...
0
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1answer
289 views

Data normalization in SPSS statistics

I am analyzing the responses of a survey using spss statistics. I understand that I will need to do a Cronbach alpha first. But here is my problem: The first part of my survey is "Awareness" and ...
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1answer
5k views

Repeated measures ANOVA: Mauchly's test undefined

I'm doing a two-way between-within ANOVA in SPSS. I have two groups with 9 subjects each (so total = 18), and 24 levels of one repeated measure. I understand why Mauchly's test of Sphericity has no ...
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0answers
23 views

Determining the correct test for experiment design

I'm trying to figure out the right test to use for my experimental design, I was hoping someone here could help. Here's the structure: Two independent variables, IV1 and IV2. IV1 has 3 levels, IV2 ...
0
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1answer
3k views

Mixed model in SPSS with random effect and repeated measures

I am working on analyzing a dataset that involves repeated measures data. The data was previously analyzed by a colleague using custom code written in C++, but I have expanded the dataset and am ...
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1answer
21 views

Mediation analysis in spss when there are two mediators having correlation with each other?

i am conducting a research, there are two mediators that are parallel to each other, the point is when i run correlation analysis, these two mediators also show correlation with each other, is there ...
4
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1answer
10k views

Inter-rater reliability using Intra-class correlation with ratings for multiple objects on multiple properties

Initial Question: I am trying to calculate inter-rater reliability. Previous researchers in this area have used intraclass correlation. SPSS has options for two-way random, mixed random and one-way ...
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0answers
16 views

Inexplicable AIC/BIC growth from base model in SPSS 23 in a mixed model

I am running a mixed model with a binary dependent variable and a logit link using SPSS 23´s Generalized linear mixed model procedure. The data is multilevel (1 Subject, 5 questions/data points per ...
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1answer
634 views

Optimal scaling / CATREG (categorical regression) for imputed data

I have a data set with 5 different kinds of nutrient statuses and I want to see whether they are associated with categorical / ordinal grades at school. I have multiple covariates which I will ...