Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.]

0
votes
0answers
13 views

How to differentiate between a one way ANCOVA and a 2 way ANOVA in SPSS?

How do you differentiate between a one way ANCOVA and a 2 way ANOVA in SPSS when the one way ANCOVA has a continuous dep.var, categorical indep.var and a continuous covariate, while the 2 way ANOVA ...
0
votes
0answers
12 views

Cochran's Q test with changing proportions

for my thesis I am investigating the change in proportions of children in regular and special education. The information is obtained through an online questionnaire, and I have data for 4 consecutive ...
1
vote
1answer
15 views

Comparing the mean of two Likert scales with only one (no) group

I have data from several Likert Scales which look at how people feel about object a - e. I want to compare the means of these results and see whether people feel differently about object c and object ...
0
votes
0answers
8 views

Repeated measures anova with 3 groups

I have a dataset with 3 groups Tuni, Sal, and Ohda. I have two timepoints for each, time 30 and time 60. I want to do a repeated measures ANOVA with posthoc tests for group*time in SPSS. I have also ...
0
votes
0answers
5 views

testing normality in repeated measures

For my bachelor thesis I collected data. I have a within subjects-factor (2 levels) and a covariate. I am using SPSS. When I want to check normality of my sample, I know I need to do that with the ...
0
votes
0answers
8 views

Intraclass Correlation Coefficient in multilevel models (HLM)

I am currently writing my Master's Thesis and struggling to find a convenient way of calculating the ICC for my multilevel model (random intercept, fixed slopes). Information to the data: I have ...
0
votes
0answers
31 views

R:Generate tow data sets with an specific correlation and p-value [on hold]

I want to generate tow data set with these attributes : the data sets should be natural numbers and between 1-5 the number of cases should be 384 Spearman or Pearson correlation should be 0.4 P-value ...
0
votes
0answers
8 views

SPSS - Where is model equations? (Temporal Cusal Models) [closed]

I used "Create Temporal Causal Models" option in SPSS (v. 25). The output is full diagrams, statistical tests etc., but where can I find the model equation? Manual says this "The procedure then ...
0
votes
0answers
6 views

SPSS: Save all data - and it's gone? [closed]

I thought that I could save my whole data set by clicking the 'Save All Data' button. Previously I clicked the 'Saved As' button. This is the only version I still have now. Apparently the 'Save All ...
0
votes
0answers
26 views

Correlation of binary variables

The presence of 15 different types of bacteria was analysed in a sample of 250 people in a cross-sectional study. They were coded as binary variable (1=present or 2=not present). I need to find out ...
0
votes
1answer
34 views

Data analysis mess! Huge data set, 2 factors with 2 levels each, but the levels are the same

To explain the hypothess a little bit: The factors would be emotional words and neutral words; the levels of both factors are left and right visual hemifields. The data is the participants response ...
1
vote
0answers
17 views

How to compare two mediation models?

I ran a mediation study using three dispositional measures, each measured with a scale. The order of scales was in line with my assumed model, so A --> B --> C. Using SPSS and PROCESS the results ...
0
votes
0answers
24 views

How to deal with a regression analysis when we have 2 time periods

Hi everyone, we have this data set on SPSS for a case study in the university. Our research question is the following: Can we formulate crime-rate-responsive policies using the socio-economic and ...
0
votes
0answers
9 views

SPSS Regression Analysis Separate/Multiple Reference Variables?

I am attempting to run a regression analyses using eight variables (Prior, Field, Specialty, Ability, Opinion, Backed, Consistent, and Trust), each with three levels (Strong, Weak, NA). I have dummy ...
1
vote
0answers
21 views

Variables transforms in SPSS [closed]

I'm currently working in a linear regression in a large dataset in SPSS and would like to check several combinations of variables, eg V1+V2, V4*V8 and so on. The meaning behind this would be to have ...
0
votes
0answers
23 views

Correlations among two variables across time (increase over time?)

I have conducted an experiment (user study) with 3 measurement times and 2 variables (for each time point). I want to test the following: (a) increase in variable 1 from time1 over time2 to time 3 ...
0
votes
0answers
23 views

SPSS or R: Correlation between two variables over time?

I hope you can help me or give me any hints - any keyword for me to look into is appreciated! I have conducted an experiment (user study) with 3 measurement times and 2 variables (for each time point)...
0
votes
0answers
19 views

Multiple imputation in SPSS. Where are my confidence intervals in regression analysis?

I have used multiple imputation on a dataset (10x) in SPSS. Now when I analyze the dataset using linear regression analyses I can get a pooled b and p-value but it does not give a 95% confidence ...
1
vote
1answer
23 views

How to perform a general linear model with random intercept with data? [closed]

How to perform a general linear model with random intercept with my data with SPSS or R? I would like to know if the CO2 emission is significantly different between my treatments. My sampling design ...
0
votes
0answers
12 views

Analysis question for repeated measures data

I am conducting a survey wherein people are offered different hypothetical amounts of money (8 ascending values) to complete a task. For each value, people rate how motivated they would be to complete ...
0
votes
0answers
18 views

How run run followup (post-hoc) tests for multiple Chi-square tests

I have been looking around on the net looking for the best way to do a post-hoc analysis for multi factor significant chi-square test, with no success. I have a data-set of patients with different ...
0
votes
1answer
21 views

How to compare two Crosstabs for significance?

I have two crosstabs and need to determine whether their differences are significant. Both tables have the same independent variable but different populations. E.g., The only test I know to do is to ...
0
votes
0answers
17 views

Principal component analysis how to find important factors in spss

I did a survey to know the attitude of customers towards various elements of direct banking channels. I have performed Principal Component Analysis on a set of 70 items and generated five factors. I ...
1
vote
0answers
21 views

Is there a way to prevent forecasting negative values in SPSS?

Currently I'm using the SPSS expert modeler, the training series is a seasonal time series, with some values close to zero in each period, and I find that when the training series have a descending ...
0
votes
0answers
45 views

Using Gamma-log link GLZM for non-normal data?

My college supervisor for Psychology has advised me to use a GLZM (gamma family with a log link) to analyse my data set, on the basis that the response variable is 'all positive data, and is 'right-...
0
votes
0answers
14 views

Moderation Analysis in a 2×2 Pre-Post-Design

I have two groups and two measurements for each group (pre and post intervention) and I need to test the influence of a third continuous variable that I assume moderates this relationship. After doing ...
0
votes
0answers
17 views

Homoscedasticity - binary independent variable [duplicate]

I am currently doing a a) linear regression with independent variable being binary, dependent continuous b) multiple regression with independent variables being binary and continuous, dependent ...
1
vote
1answer
42 views

ANOVA results discrepancy between R and SPSS

I ran into problems when trying to double check SPSS ANOVA calculations with R. I am aware of the difference in defaults concerning the Sum of Squares, therefore I followed guidelines for aligning ...
0
votes
0answers
20 views

How do you normalise data 0-1 (from three separate personality scales) for a binomal logistic regression?

I have been advised to transform my predictor variables (scores on 3 different personality scales) before I run a binomal logistic regression. I have tried using zscores but I get errors when testing ...
0
votes
1answer
28 views

Can you run a correlation using a variable with a range of -30 to 30?

For example, if you wanted to find a correlation between smoking and weight change and your survey items ask: "How many days, in the past 30 days, have you smoked a cigarette?" (range 0 to 30) and "...
1
vote
1answer
46 views

Interpretation of SPSS logistic regression output?

would really appreciate some help interpreting this output. Think I'm almost there, but just have a question about interpreting the sig. column: This model aims to look at factors contributing to ...
0
votes
0answers
44 views

Chi-Square tables in APA format using R or SPSS

Does anyone know how to automatically generate APA formatted crosstabulated Chi-Square tables in R or SPSS? I haven't been able to find a satisfying solution so far. The closest one is APATables R ...
0
votes
0answers
25 views

Can I use the same orthogonal design for conjoint analysis but testing less cards?

So I generated 15 conjoint analysis cards using SPSS orthogonal design (9 cards + 6 holdout cases), then tested only 12 of them (9 cards + 3 holdout), leaving the last 3 holdout cards forgotten in the ...
0
votes
0answers
12 views

Significant differences with Tukey test

I ran a statistical analysis in SPSS and with the Tukey test I want to determine significant differences between means. Let's take three of the means I got: Sample A: Mean = 3.000 Sample B: Mean = 3....
0
votes
1answer
12 views

SPSS Statistics

The variance measures how far each number in the set is from the mean I have 151190 records of a table. and i have to analyze the data on SPSS. after the analysis i have some results. Mean=74617.92 ...
0
votes
1answer
29 views

Principal Component Analysis, should I interpret the component matrix or the component score?

I am doing a Principal Component Analysis on some demographic data. I have extracted four principal components and I hope to find out how each component is characterized by the original variables. I ...
2
votes
1answer
11 views

Interaction changes f-values of main effects in Lme4?

in need of some clarity (or charity, whichever way you look at it) - haha! Running a linear mixed regression with two within subject variables each of which has two levels (AB, XY), with the DV as ...
1
vote
2answers
77 views

Interpreting SPSS Cohen's Kappa output

When running Cohen's Kappa in SPSS, it outputs a few things. Cohen's Kappa Asymptotic Standard Error (ASE) Approximate T Approximate Significance If I have a Kappa of 0.90 and ASE of .012, can I ...
2
votes
2answers
100 views

Time Series Forecast / Transfer Function

I'm trying to interpret the forecast values from an ARIMAX function, and I'm confused about what's happening in the actual forecasted values as I change the values for the predictor during the ...
0
votes
0answers
21 views

Insignificant t test or MW U test yet high ROC AUC and vice versa

In SPSS, when I conduct a Student's t test or Mann-Whitney U test on (lots of) variables when comparing between 2 groups, some differences are denoted significant, and others aren't. When I conduct ...
0
votes
0answers
14 views

How to Control the Type-1 Error Rate for T-Tests Used to Understand Sig. Interaction Effects

Basically, I ran a repeated measures ANOVA between groups R and D with one within-subjects factor with 2 levels. A significant interaction was found. To understand what was driving the interaction I ...
1
vote
0answers
5 views

SPSS identification restrictions on EFA models

I am trying to understand the restrictions used by SPSS to identify EFA models using ML extraction. FOr example the GFI for a 2 factor model of 8 items (shown below) has 13df I understand to identify ...
1
vote
0answers
9 views

Regression Equation when multiple DV's (varying years)?

I have a research question that is asking how perception of quality change over time. So participants answered what they believed quality is at Year 1, Year 5, Year 10, etc. How do I create a ...
0
votes
0answers
4 views

SPSS Syntax - Computing variable if a certain number of variables meet a given criteria

I have a question regarding syntax for recoding multiple variables into a new variable in SPSS. The set-up: I have 7 dichotomized variables (VAR1X, VAR2, VAR3, VAR4, VAR5, VAR6, VAR7) and want to ...
3
votes
1answer
114 views

Interpreting non-significant regression coefficients

Out of seven, six of the independent variables (predictors) are not significant ($p>0.05$), but their correlation values are small to moderate. Moreover, the $p$-value of the regression itself is ...
3
votes
2answers
61 views

Negative estimated means in Poisson regression output

Can anybody help me understand what the negative estimated means in a Poisson regression mean? I am trying to model the count of damages during transit for 4 different logistics providers. To make it ...
0
votes
1answer
121 views

2-way ANOVA in Python statsmodels yields different Sum of Squares than SPSS

I am learning to use Python for my statistical analyses, and while figuring out how to perform a 2-way ANOVA with statsmodels I found that my Python code yielded slightly aberrant values. Comparing ...
0
votes
0answers
38 views

How does SPSS “standardize” variables for discriminant analysis?

We are trying to reproduce the outcome of a discriminant analysis done in SPSS and run into a mystery. This link: https://stats.idre.ucla.edu/spss/output/discriminant-analysis/ explains that ...
0
votes
0answers
11 views

SPSS KMeans Clustering Output Drastically Different than Scikit-Learn KMeans

I am clustering a rectangular data set with 82 records and 2 columns (a date and an integer between 1 and 2). The goal is to cluster dates that are close in proximity automatically in a way that ...
0
votes
0answers
13 views

Signs in SPSS's PCA with rotations with the FACTOR algorithm

I am trying to reproduce the results of the PCA with rotations from SPSS in python. But there is some information I didn't find in their documentation. I am trying to do the PCA like in the FACTOR ...