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Questions tagged [spss]

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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What do “excluded variables” mean when you use SPSS to run regression?

I am using SPSS to run linear regression with several predictors. In some cases, when I threw in some variables, SPSS will show the regression model with all the variables. But at the bottom, it also ...
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Factor Analysis and loading

I conducted a Factor Analysis using SPSS (see output attached). I used an oblique rotation (direct oblimin). How do I tell which variables load most highly on each factor? Thanks for any help.
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Why is an Independent Variable highly significant in a single regression but becomes highly insignificant in a multiple regression? [on hold]

I am new to regression analysis and am writing a term paper. I would highly appreciate any help. I am so stuck, deadline is looming. Regression results attached below. Problem: I ran Regression 1 ...
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spss GLM AIC and BIC

I have a dataset which contains categorical and numerical predictors, and a binary logistic response. I need to select a best binary logistic model, and to achieve this I use function "Generalised ...
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Multiple Imputation in SPSS for RCT

I have conducted a randomised controlled trial design (2 groups - experimental and control) with data collection at two time points (T1 and T2). I want to use the Multiple Imputation Method in SPSS to ...
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R-square for regression using multiple imputation

I'm using multiple imputation to see how confidently we can apply the regression coefficients found for a sample to the whole population. Does it make sense to have an R-square for the model made ...
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Statistical test for three independent variables and one dependent variable

I use SPSS for my data analysis and cannot seem to think of a proper test to test my hypothesis. I have three independent variables (1. direct emotion expression, 2. indirect emotion expression and 3. ...
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ANOVA is significant but coefficients aren't

My master thesis investigates the relation between stock raw returns and sentiment scores. To make a conclusion there is a multiple linear regression with the mean sentiment, the variance of the ...
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1answer
21 views

OLS - regression: how to interpret it? [duplicate]

I'm running an OLS and was wondering if the 'Estimate' in my SPSS output is the same as the beta coefficient in a linear regression? Are there specific assumptions required to run an OLS? I have age, ...
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Multiple regression and multiple comparisons 3 groups

I'm trying to compare the effect of an IV on my DV, where my data are separated into 3 groups. Specifically, in one group there is a significant correlation between IV and DV, but in the other two ...
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2answers
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Understanding the Confidence interval

I'm trying to figure this out and either I am completely missing the point or I am in fact correct. (I am a student). The null hypothesis is "There is no significant difference between time taken to ...
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Wilcoxon signed rank test - interpretation

I have 6 dependent variables that were measured on a 5 point Likert scale (treated as interval here). I want to test if their means differ significantly from the midpoint 3. As the normality ...
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Moderated mediation with multiple independent variables

I want to do a 2 x 2 x 2 between-subjects design. Each independent (categorical) variable has two levels. I have one mediator (continuous) between the independent variables and the dependent (outcome) ...
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Number of observation differs per group. How to deal with that?

I have a question regarding a mixed model analyses in SPSS. I have 2 groups (shift workers and non shift workers), each individual has different number of observations (depending on the frequency of ...
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1answer
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Logistic regression: Sample size for emmeans comparisons

I conducted a logistic regression with a 3-levels categorical predictor in SPSS using the GENLIN procedure. As I am interested in the pairwise comparisons between all three predictor levels, I used ...
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1answer
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Why does my N change when weighting cases in SPSS?

I'm stuck here while analyzing data in SPSS and I could really use some help. I'm weighting cases in my dataset, but when I run any analysis my N has changed from 189 to 176. Is this normal with ...
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1answer
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Inferential Testing

I am currently working on my dissertation, which is investigating the relationship between working memory capacity and problem-solving ability. I have two independent controls task 1 and task 2, both ...
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1answer
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Can point-system be used for hypothesis testing?

I've created a point system for the bestseller's list (I've 52 weeks' lists).The list has 4 categories of genre (romance, thriller, fantasy, literary fiction). ...
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Compute predictive power variable on stock returns

I have a self made dataset with 40 stocks listed with following information in a range for 1 month: - closing price stock - sentiment score e.g. 01-01-2018 - closing price - sentiment score for that ...
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How to compare turnover rates across three facilities over a period of 5 years?

I need to compare the turnover rates between 3 facilities (turnover calculated as number of voluntary & involuntary terminations divided by the average number of staff multiplied by 100). In ...
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Problem with Exploratory Factor Analysis for my 7 items measuring attitude on SPSS

My factor analysis using direct oblimin keeps giving me only partial results, stating 'Attempted to extract 2 factors. In iteration 25, the communality of a variable exceeded 1.0. Extraction was ...
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1answer
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SEM 4 questions - testing linearity, sum score, number of variables, independent variables

For my master thesis I'm making a structural equation model. However, I do not have much experience with this. So here are some different questions. I read that one of the assumptions important for ...
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29 views

Choosing appropriate statistical tests

I am trying to run stats on medical treatment data and would like your guys and girls help Goal: Comparing two trends of annual percentages for statistical significance. Is one decreasing due to the ...
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SPSS correlation matrix from multiple imputation dataset, p-values and df

I use a multiple imputation dataset to create a matrix of correlations between a few variables of interest. The pooled correlation matrix does not show significance or df, unlike the original matrix ...
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Checking PH assumption for a time dependent (T_COV) variable in a Cox PH-regression: with or without the original covariate in the regression?

I am performing a cox proportional hazard regression on survival, in a sample in which almost everyone dies in the follow up period. I have little knowledge on statistics in general but i am reading ...
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Correlations and Hierachical Regression

For my dissertation I've carried out a hierarchical regression. My results have shown: -correlations. Neuroticism is correlated non significantly .000 on SPSS to my dependent variable. Mood is non ...
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How should I deal with continuous independent variables in a regression for ordinal dependent variables?

I am doing a research for which I will perform a data-analysis in SPSS. My dependent variable is 'father involvement'. I have four different questions that have measured different forms of 'father ...
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How does SPSS MLP procedure choose the number of neurons in a hidden layer

The SPSS MLP procedure can automatically choose the number of nodes in the hidden layer. How does it choose this number? How confident can I be that this number is anywhere near optimal?
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Accounting for gender differences between two groups [closed]

I have 2 separate groups of patients and I'm comparing frequency of attendance in either group. I would like to perform an analysis that accounts for gender as a separate variable but I'm not sure ...
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2answers
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SPSS Paired Samples T-Test outcome interpretation

Hypothesis: -Blood pressure will decrease after intervention Results (blood pressure): Systolic bp before mean: 102.00 Systolic bp after mean: 97.10 Diastolic bp before mean: 70.80 ...
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1answer
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What SPSS test should I use for blood pressure pre- and post-intervention for comparison?

I have 10 participants who consumed an intervention for 3 weeks. I would like to look at any significance between pre-intervention and post-intervention readings. What SPSS test should I use? I ...
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Same participants, same variables, collected three times - What SPSS analysis?

I am testing the relationship between two variables, A and B. I collected A and B for the same group of people each month three times. I am expecting that A and B will vary within people, but that A ...
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Midpoint removal from 5-pt liker scale

I have removed midpoints from a 5-point likert scale instrument on my supervisor's advice. When I did some reliability analyses - SPSS showed that almost half of my cases were excluded. So we ...
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Getting pooled F-values and p-values for multiply imputed data in SPSS?

When working with a dataset created via multiple imputation, SPSS pools some values but not others. For example, in multiple regression, I can get coefficients, t-tests for the coefficients, t-values ...
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Log-Linear Output Help

I ran a loglinear model with 3 variables. Internet Use (Y/N), Nervous Breakdown(Y/N), and Happiness (3 levels). I understand by two way interactions are significant, but I am getting lost trying to ...
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How do you run a moderation analysis and post-hoc in Chi square in spss?

How to test for an interaction in Chi-square? Is it also possible to then test for a further interaction in one of the groups? E.g. I test for an interaction in a whole dataset, then split data (?) ...
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The function of TIME in longitudinal MLM

I am conducting longitudinal multilevel models with Daily observations as level-1 variable and PARTICIPANT as level-2 variable. Predictors and outcome variables are measured every day. I am confused ...
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Simultaneous non-significant variance parameters but significant co-variance parameters mixed models/random effects

I specified a linear mixed model in SPSS: TNA_HRQOL is the DV TIME_0 is a rep measures factor (0,1,2) which I specified as a covariate TK_Name (doctors) is LVL3 subjects, TNA_Name (individuals) is ...
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3answers
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Comparing means in large samples: effect size and p-value

I have a large sample (10000+ per location) of temperature measurements which I would like to compare between 3 locations. I'm checking if there is a significant difference in temperture means between ...
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Hypothesis testing: multiple linear regression

i need help with testing the following hypothesis: H1: demographic variables influence the quality perception of French wines I conducted an online survey that asked for the following demographic ...
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1answer
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Which method to use for predicting variable a (score based on a likert scale) with an variable b and c

I have three variables. The energy behavior is a score based on a Likert scale. The other two variables age and education are nominal. Now I want to show that the two nominal variables, age and ...
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1answer
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Cross Correlations Reversed - SPSS and R

I'm wondering if anyone else has noticed that cross-correlations are reversed between SPSS and R. Here is an example of the exact same data run in both R and SPSS (V23). Note how the the axis is ...
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Chi Square and Fisher’s exact test with Monte Carlo

SPSS can’t calculate Exact test for 4x7 table of my data so I did it with Monte Carlo. The output is given below. Considering the rules of Chi-square, I should use Fisher’s $p$-value for the result of ...
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SPSS ANCOVA interaction significant once main effects removed

I'm running a 2x2 factorial ANCOVA, where the factors are either being in condition A or B and either being part of a certain group or not, with two covariates being age and gender. When I run the ...
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Interpreting findings of moderation using PROCESS Macro

I have recently conducted a moderation analysis using the PROCESS Macro plug-in for SPSS. I have tested the moderation effect of W (categorical using dummy variables) on the relationship between X (...
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Superimposing regression lines from 2 simple linear regression models into one graph [closed]

SPSS question, really. Been asked to produce two simple linear regression models, one with an intercept, one without (both for one set of data points). But they have to be on one scatter plot for ...
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Cohen's Kappa in R versus SPSS

I was working with R and SPSS trying to determine Cohen's Kappa for a dataset. I decided to test the two and see if they would end up getting the same numbers. However, they did not. I was wondering ...
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In a within-subject experiment design, I have 2 independent variables and 1 dependent variable. Which statistical test do I use?

I have collected pupil size data in a pupillary conditioning study (with a baseline correction applied) in which I want to compare the area under the curve (AUC) in a pre-training control to the post-...
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How can I classify a person's score according to my discriminant variable, in a discriminant function? (multiple discriminant analysis) [closed]

I'm doing a research on 5 types of entrepreneurship (dependent variable) and personality traits (5 independent variables). As you can tell, I did a discriminant analysis as a "plus" for my prior ...
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SPSS mixed models - using classroom as an effect in the model

I'm looking at data from a health intervention study done in one middle school (16 classes/"clusters" at that school). Half assigned to control, half to intervention. Is this an appropriate way to ...