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

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1answer
94 views

Constant forecasts in SPSS

I have weekly data for the last four years. I am using SPSS to do forecasting. I am getting a constant value in the forecast period. What could be the reason behind it? Is it due to defining weekly ...
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1answer
137 views

Can i do a paired t-test on a pre- and post questionnaire but without pairing the same student for the pre and post?

I really suck at this so hope you could help me ve a group of people attending a training course, in order to measure whether the training course is effective in improving attendees' knowledge. We ...
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1answer
211 views

How to combine several categorical variables into one quality of health measure?

I am new to SPSS, and am trying to use SPSS to generate a variable on the quality of health service available to the residents of an area. Below are the categorical variables that could tell me the ...
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1answer
83 views

Save R MICE Imputed Data as SPSS data

I am calling the R MICE routines into SPSS to do multiple imputations. My question is how to save the multiple imputed data sets as SPSS files for later analyses. Any help would be greatly ...
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0answers
108 views

Which graphs are best suited to visualize multiple pre- and post-test scores between multiple groups?

I have a relatively small sample ($N = 64$) with the following variables: ScoreA_I: continuous pre-test response variable ...
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1answer
75 views

Confidence interval does not include 0, but Wilcoxon test is sgnificant

I've created an error plot with CI 95% to visualize the difference (post test - pre test) between achieved scores. n = 64 Judging from the confidence intervals one could conclude that there's is ...
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1answer
34 views

Does power of a test depend on number of cases or number of observations?

Cases and observations. It is my understanding that sample size is determined by the number of individuals taking part in an experiment (from my undergrad Psychology stats course). For each ...
2
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0answers
62 views

How to code and analyze skiped questions with SPSS

sorry if my question may seem rather silly, but I'm not well up on statistics and need a piece of advice. I have some cases in my dataset where respondents have abandoned the survey half-way, so I ...
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0answers
49 views

random effect in mixed linear model SPSS

I am using a mixed linear model to analyze the effect of two types of treatment on symptoms. The two treatments were administered in smaller groups (clusters), and delivered by several doctors, so I ...
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0answers
26 views

How can I statistically compare two time-series? [duplicate]

I have two time-series. Data have been logged over time for two different objects. Is there a significance test, applicable in SPSS or Minitab, that can be used to determine whether there is a ...
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2answers
197 views

Correlation and group difference with unequal sample sizes

My sample is 60 participants. At first, I did not expect to analyze the correlation, but the result is interesting, so I would like to. The 60 participants are 50 people who have good reading skill ...
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0answers
15 views

Should I include multiple mediating variables in the same analysis?

If the answer is "it depends", what does it depend on? I have three mediating variables, one predictor variable and one outcome variable. I have observed that the results I get when I run three ...
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0answers
87 views

SPSS: How to decompose interactions in repeated measures ANCOVA?

I conducted a study with three categorical within-factors and one continuous personality variable: topic (1,2) x gain loss framing (1,2) x achievement security framing (1,2) x personality I know how ...
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0answers
57 views

Composite Scores and Standardized Composite Scores t test

I have a set of survey data related to 20 survey questions. Each of these questions represent a variable (Q1, Q2,......
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0answers
62 views

Discontinuity Regression

I'm writing a political economy Master's thesis regarding the effects of the Euro Crisis on the rise of separatism in Spain (Catalan independence for example). The idea is to show that the Crisis has ...
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1answer
82 views

Sample-adjusted meta-analytic deviancy macro/syntax for Excel, SPSS, MPLUS

I need to compute the sample-adjusted meta-analytic deviancy (SAMD) as part of an outlier search with meta-analytic data. Because we have a very large amount of meta-analytic data, computing this ...
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0answers
54 views

Correlation between a categorical predictor and a continuous outcome variable

How do I perform correlation between a categorical antecedent variable and a continuous outcome variable? Like for example, correlating EACH attachment style with another variable, i.e, social ...
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0answers
14 views

isn't it possible giving weight to attributes in Clementine?

I use SPSS Clementine. I need to give a weight to one of my features to be considered much more than others as it is more important. I can't find any option to do this for training a C5 tree. the ...
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1answer
51 views

R plugin for SPSS [closed]

Can anyone tell me how can I integrate the R plugin for SPSS version 17?? I need to do some statistics using the R plugin for SPSS, unfortunately I can't find the plugin on the internet, so can anyone ...
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0answers
59 views

I'm stuck: How to 'bin' multiple binary outcome variables and then analyze within subject?

I have what feels like it should be a very easy analysis to work out, but I've been trying for hours and I can't figure it out. I'm using SPSS by the way. I have 10 (5 of each group) different binary ...
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1answer
50 views

Tree analysis - CHAID

I am running a decision tree analysis, and the same predictor that forms the first core branch, reappears as an another branch further down the tree. Could somebody explain me how this is possible? ...
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0answers
64 views

Relative Variable Importance in Clustering

In SPSS, the user can check the relative variable importance in a clustering result and produce a graph like the following: link: ...
2
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0answers
28 views

How to compare 37 dichotomous variables (lab tests) to 31 dichotomous variables (diagnosis)

I've constructed a database based on chart review of patients. Patients had a variety of tests performed (37 different types, which were either positive, negative, or not performed aka 1/0/blank - I ...
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0answers
17 views

Is my data normal? [duplicate]

Ive tested my data for normality in SPSS, and i have two sig. numbers from the Kolmogorov-Smirnov and Shaprio-Wilk. In the Kolmogorov-Smirnov test i have the data: 0.014, 0.013, 0.200 and 0.200 In ...
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1answer
153 views

How can I compare regression coefficients in the same multiple regression model

I think this question has been answered in bits and pieces here and there, but I am still a bit unsure about what the best approach for this is: how to compare two coefficients from a multiple linear ...
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0answers
118 views

5 Likert Scale and Normal Distribution prior to parametric testing

I have data from a 5 point Likert scale item which approximately 1/4 of the responses only account for 1 through 4 of the 1 through 5 available. Do I have to standardize the min/max response ...
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0answers
383 views

What do the tests of model effects and parameter estimates really tell (when an interaction is defined)?

A couple of times in LMM or GEE (with SPSS, though I doubt that matters – and might occur in other analyses as well, but these are the ones with which I have seen it) I have seen something that seems ...
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44 views

How to analyse the relationship between many categorical variables

I have a number of categorical variables, each with varying numbers of levels: gender of client (m,f) age group (0-8, etc.) diagnosis (mild, moderate, severe, profound) location (community, ...
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0answers
26 views

Need help with proper syntax for SPSS Mixed [closed]

I am having trouble building my model properly, and I was hoping I could get some advice here. I have a 2 (S: P vs. D) x 3 (ET: CA vs. CO vs. AD) between-subjects design. Participants were run in ...
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0answers
66 views

Questionnaire analysis and grouping responses

I want to know if the creative process engagement (CPE) is related to creativity. I don't know how to analyze the questionnaire. I will be collecting data for CPE with Zhang and Bartal's (2010) ...
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0answers
239 views

is it possible to use partitioned data(train&test) together with cross-fold validation?

I have used SPSS Clementine in order to train a classifier, for this I have used a partition node with 2 parts(train and test),then using a c5-tree and cross-fold validation. I did this because I ...
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0answers
96 views

Testing “weak” instruments - F test

I would like to address the endogeneity problem in my model. Let me go step by step. I have panel data for 19 countries, 1995-2010. My regression model: ...
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1answer
69 views

Best way to estimate a regression with reaction times

I have reactions times in a no-normal distribution, so I am using logarithms. Which can be the best way to estimate a regression? Later, I would like to plot the results according to the age of my ...
2
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0answers
81 views

Does it make sense to plot train and test results on a common ROC graph?

I am building a model using SPSS with 80% of my data. I can plot a ROC curve for both the training set and separately for the test set. I can´t find a way to plot both on the same graph. Since both ...
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0answers
55 views

Running standardized/unstandardized regression equation on SPSS

I am working on a regression assignment using SPSS. I have raw, centered, and z scores for the data. I already regressed the DV and IV and see the unstandardized and standardized coefficients under ...
3
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1answer
174 views

Find out if there is a way to create BMI weight category variable

I am working on a project and have to find a way to break my data into percentiles. The variables that I already have are gender, age in months and BMI. If I am able to calculate the percentile that ...
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0answers
38 views

Calculate residual after SPSS runs ANOVA

I have a task something like compute residuals in dollars for one observed person (with gender code, a class they're in, their age, and they make let's say 50,000 a year-the Dependent Var). After ...
3
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2answers
80 views

Relationships between health conditions - Spearman's correlation?

I am examining the relationships between health issues in pigs. I want to know which conditions tend to co-occur. All animals have at least one condition and 5 at most. I have coded each condition in ...
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0answers
58 views

SPSS/Stata Repeated Measures - Contrast question

I have data from 8 subjects collected at 5 time points. I would like to see if there is a difference between time points (1 + 2) and (3 + 4 + 5) using either SPSS or Stata. When in SPSS I use ...
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1answer
116 views

Grouping subject data for within-subject analysis in SPSS

I have over 30 subjects who each did the same task about 50 times. Each of these data point can be in condition a1 or a2 of variable A or condition b1, b2, b3 or b4. So for each subject, I have ...
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0answers
93 views

Different degrees of freedom when using the same mixed effect model (SPSS)

I have a question regarding mixed effect models. Is it possible that the degrees of freedom differ when I use the same model with different dependent variables? Or does that indicate that something ...
0
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1answer
51 views

Data formatting for an ANCOVA in SPSS

was wondering if someone could help clarify an ANCOVA for me, or maybe post me in the right direction. I have a set of outcome measures that have been administered pre treatment and post treatment. I ...
3
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0answers
157 views

Binomial logistic regression in SPSS using survey weights

I am running a logistic regression in SPSS with a sample that uses survey weights. The sample size is 1000 and the weights are along the lines of .86 or 1.23 depending on the case. I am using the ...
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0answers
187 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 ...
2
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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 ...
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0answers
35 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 ...
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0answers
412 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 ...
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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 ...