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

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1answer
30 views

How to create an “alignment” variable from mutual rating variables

I want to create an "alignment" variable out of two other variables. Meaning, that if two raters (say manager and employee) rate each other similarly, alignment is high, but if they rate each other ...
0
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0answers
36 views

How do I find if a dependent variable is affected by another dependent variable?

I have one experimental group with language disorders (independent variable) and I have administered them 4 tests (dependent variables). The "language" test which comprises of the sum and two subparts ...
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0answers
83 views

Generalized Linear Mixed Model

I have three independent variables (all binary) and two interaction variables that I would like to test for their effect on the dependent variable "Awareness_level". This dependent variable is also ...
2
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3answers
133 views

Are the results of OLS linear regression correct?

How could we know if the coefficients and R-Squared in the following table are reliable and are correctly computed or not? Is there any way to validate the correctness of the results, considering that ...
0
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0answers
427 views

SPSS: Crosstabs multiple comparison

I have a table with 11 columns and 2 rows. Column 1 is the control group and I want to compare all the other columns with it. I'm not interested in compraing columns 2 - 11 with each other and I'm ...
0
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1answer
72 views

Can I use Mean values of likert resposes instead of factor scores in case of skewed values?

I have five point likert scale responses ((1-most imp, 5-least imp) for 14 items that I want convert them into 5 factors with confirmatory factor analysis. I already have designed which item should go ...
1
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1answer
126 views

Regression with multiple dependent variables and 2 sets of multiple independent variables

In my data I want to be able to determine which set of IVs (there are 8 variables total, 4 in each set) does a better job of predicting a set a DVs (there are 4). I know I could use multivariate ...
1
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1answer
138 views

One way Anova Test validation

Let me give you an example to show what i am trying to. Let's say 50 patients started a cure for a disease and it took 2 months. So, I want to compare the first month's tumor sizes to the second ...
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0answers
21 views

Power analysis for log-gamma model

I fitted a generalized linear mixed log-gamma model in SPSS with 1 fixed factor (binary), patient ID as a random intercept and a continuous variable as (fixed) covariate. How can I calculate the ...
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0answers
32 views

How to analyse Multiple Imputation data with SPSS?

I have to work on a dataset treated with the Multiple Imputation method to handle missing data. In fact, I have 5 different variant of the same dataset, with missing data replaced by probable values. ...
0
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2answers
658 views

Pre and Post test analysis utilizing a likert scale and SPSS

I will openly admit that statistics and statistical programming is not really in my wheelhouse. That said, my job requires it. I am trying to analyze the data gathered from a pre and post test survey ...
1
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0answers
61 views

Difference between BIRCH and Two-Step Clustering

I don't have SPSS. But judging from the documentation you can find on the internet, SPSS "Two-Step Clustering" seems to be closely related to BIRCH clustering: Zhang, T., Ramakrishnan, R., & ...
1
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1answer
283 views

What data structure to use for my cluster analysis or what cluster analysis to use for my data?

I have a large dataset of categorical variables. The data consists of shoppers who purchased two items during a single trip to a store. There are approximately 75,000 cases and 1,500 different ...
0
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1answer
930 views

Fisher's Exact Test value in SPSS

I have two ordinal variables, and I'm using the Fisher's Exact Test in lieu of the chi-square test when the expected values for the latter test are lower than 5. My contingency tables are $3\times2$. ...
1
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2answers
131 views

Cluster analysis, what to do with different scales?

I want to identify different groups of respondents out of up to five variables of the European Values Study 2008. At first I took 4 questions for cluster analysis all on a scale from 1 to 10. ...
2
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2answers
206 views

Weighting variables in two-step cluster analysis

I'm using SPSS to perform two-step cluster analyses. SPSS shows predictor importance of each variable used in an analysis. Oftentimes, a binary variable like gender (sorry, I'm just keeping it ...
3
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2answers
140 views

Is a repeated measures ANOVA appropriate for multiple within-subject measurements?

I recorded 4 groups of captive birds (each group a difference species) at the same 3 times each day for 15 days. I want to determine if there is a difference in their vocalization properties such as ...
0
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0answers
137 views

Can complex Kruskal-Wallis results be reported in tables for APA-style publication?

Advice? I ran a Kruskal-Wallis H test in SPSS and have a lot of variables to report for a paper for publication in APA format with limited word count. Can I show all the paired comparisons in a ...
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0answers
21 views

Correlation between ordinal variable an nominal variable [duplicate]

I want to find correlation between job satisfaction (by likert-type questionare) and sex. Should I use Kruskal-Wallis test to find correlation between two?
1
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1answer
60 views

More specific test to see where it is significant rather then whether it is significant at all? Degree courses against levels of motivation to study

I've been doing chi-square tests to see whether there is a correlation between e.g. motivation levels when studying and degree course. With chi-square, it only reveals whether there is a significant ...
0
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2answers
205 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. ...
1
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1answer
31 views

Comparing 8 categories (degree) against % who did a gap year within that degree - which test?

Want to see if there is a statistically significant difference between the % of students who did a gap year across 8 different degrees. $$ \begin{array}{l|r} \text{Degree} & \text{Gap } [\%] ...
0
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1answer
421 views

Marketing Mix Modeling for sales data

I have data for 4 years with variables year, month and sales volume only. I want to find the base volume and incremental volume. I want to use Marketing Mix Modeling. Can anybody tell how to define ...
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2answers
60 views

Is there any way I can manually set the intercept in SPSS?

As part of my dissertation I am looking into the relationship between temperature and methane emissions. A large proportion of this work relies on statistical interpretation and analysis. When ...
1
vote
1answer
106 views

What is the correct ANOVA for repeated measures with multiple measurements for each within-subject factor?

In Andy Field's example for one-way ANOVA with repeated measures, he measures "retching time" for eight different celebrities eating four different gross foods. He tests things like sphericity, runs ...
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0answers
25 views

Comparing groups with multiple related variables

I have four groups with six subjects in each group. For each subject I have measured their mean blood pressure every minute for 3 hours. This means that I have 180 variables. The first 60 minutes ...
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0answers
24 views

Repeating ANOVA analysis after dropping one factor: different means

I had to repeat the analyses after dropping out one of the between-subject factors (order of the questionnaires) and the new means I got for other effects were different from those I had before. Can ...
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0answers
22 views

A research containing the statistical difference between two samples

I have conducted a research in which 120 people participated. For my survey I created two visual images (casual and clown). Sample 1 (n=60) conducted the interview with the casual person Sample 2 ...
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0answers
71 views

comparing two groups on ordinal data with covariates

Hi I am using SPSS to compare two groups on ordingal data (frequency of substance use): never, 1-5/week, 6-10 week etc. The substance use data is highly skewed and non-transformable so ANOVA is out. I ...
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0answers
39 views

How to wrap up individual One sample t-test results in a single one, in SPSS?

I'm evaluating a questionnaire about job satisfaction, based on Likert scale. As for any questionnaire, there are some correlated questions assessing one factor. Since I’m using SPSS, I know that I ...
2
votes
2answers
369 views

Visualizing data spread along both y- and x-axis in 2D scatterplot

I'm currently in the process of doing a literature review of a brain atrophy measurement, called BPF, commonly used in research regarding neurodegenerative disorders. I have searched for publications ...
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0answers
42 views

How to get overall result from One Sample t-test in SPSS?

I'm evaluating a questionnaire based on the Likert scale and Here's the problem. I want to assess job satisfaction which has been sub-categorized into ,let's say, 5 questions ;so I have 5 different ...
31
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7answers
3k views

Why is “statistically significant” not enough?

I have completed my data analysis and got "statistically significant results" which is consistent with my hypothesis. However, a student in statistics told me this is a premature conclusion. Why? Is ...
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0answers
144 views

Logistic regression model internal validation in SPSS

Please help! I have developed a logistic regression model for prediction of a binary outcome at a range of different times following a set point. This gave me different models with different ...
1
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0answers
17 views

Repeated measures ANOVA with unbalanced data [duplicate]

I am a master's student, and I need your help. I did experiment on one group of rats, the group was tested during 8 days, this is the first stage. The same group was also tested again but this time ...
0
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0answers
79 views

Learning curves and SPSS

I followed a course on machine learning. The analysis of learning curves on the cross-validation set was recommended, as a way to see in what respect your model can be improved (more data, more ...
0
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0answers
30 views

ANOVA repeated measurements

I am a master's student, and I need your help. I did experiment on one group of rats, the group was tested during 8 days, this is the first stage. The same group was also tested again but this time ...
1
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0answers
102 views

SPSS GLMM Data Structure setup advice

I am running an analysis looking at individual voter turnout where it is a 1 for voting and 0 for not voting. I have some information on individuals including age, gender, and several years of past ...
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0answers
29 views

spss covariates variables in regression model

in the regression model in the spss statistic software can you explain me what are the covariates variables? if i want express a model like ...
2
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1answer
155 views

Multiple imputation for missing values

I would like to use imputation for replacing missing values in my data set. I have some constraints , for example I dont not want imputed variable x1 be less than ...
0
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0answers
157 views

How to compare differences in the mean when the data isn't normal

I have two sets of mean data that I have done a Kolmogorov-Smirnov test on. The tests came back showing that one data set was normal, but the other was not. The two data sets are independent of each ...
2
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1answer
263 views

Non-normality of residuals in linear regression of very large sample in SPSS

I have a dataset of ~17,000 cases in SPSS 21 with which I am trying to run multiple linear regression. I have plotted the Studentised residuals against the unstandardised predicted values and also ...
0
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1answer
104 views

How do I model repeated measure + random effects with SPSS mixed

I'm having trouble understanding what a correct model for my data should be, and also if it would even be a good idea to make it a single model. At the basis it is a rather simple regression model ...
0
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2answers
152 views

Frequency of combinations possible

I have an SPSS data set with 700+ respondents and 13 products that they could own. Each product has its own variable Product01 = 1 means they own product 1 Product02 = 0 means they dont own product 2 ...
0
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0answers
11 views

How to obtain aggregate estimate of a factor with various levels in General Linear Mixed Models

I run general linear mixed model with factor 'Substitutability' with seven levels in SPSS. It gave six level estimates. I want to calculate aggregate estimate for 'substitutability'. How to get? ...
-1
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1answer
563 views

Linear/Non-linear Regression - SPSS

Hopefully somebody will be able to shed some light on my SPSS problems! I have been given 65 values. 57 of these data values are quarterly results and 8 are the holdback data to be used. I have to ...
2
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1answer
1k views

Mann-Whitney U test with very large sample size?

I'm doing a Mann-Whitney U test to compare two very large samples (sample size 1 = 13250; samlple size 2 = 38871) originating from a raster image. I know t-tests are not recommended to compare ...
1
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2answers
109 views

SPSS Batch Processing Method

I have a more than 150 list of products that will be analyzed by regression method based on years. For example: products: A,B,C ... N (150th products) Then ...
0
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2answers
500 views

Dataset of repeated measures with unbalanced sample size and unequal variace - What to do?

I have a dataset of three groups of cells treated with 10 different compounds and am not sure how to check for significant differences between those treatments. Within each group the data is also ...
0
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0answers
66 views

Grouped data analysis in SPSS

I have a question about how to analyze some questionnaire data. I have three different participant groups: A,B,C and each group people did the same questionnaire. So I have a total score for that ...