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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24 views

Count data with three response types

I administered a test to three groups of people. They had to choose the correct answer between four choices provided. Only one choice is correct and the other three are wrong answers. There are forty ...
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25 views

Merging Cases in SPSS [closed]

In my data set, I have multiple cases with the same ID, but with different values for the variable "Time". For example, I have 3 cases, all with an ID of 7, but with different Time values (1, 2, and ...
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31 views

Calculating the required sample size for a 2x2 repeated measures ANOVA?

I have conducted an experiment with two independent variables, each with two levels. I had one group of participants who were tested under four conditions. I have performed the ANOVA using SPSS, and ...
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20 views

how can I calculate age-adjusted z score?

I'd like to know if there's a way to calculate z-score adjusted for age in SPSS. then, I want to use age-adjusted z-score as a dependent variable in path analysis.
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23 views

SPSS Arima Model gives me straight line

I am using SPSS to forecast a time series model. It automatically gives me the best fit model using either ARIMA or exponential smoothing. When I run it, I gives me some great values for a forecast, ...
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28 views

Correlation between time series obtained from multiple subjects, SPSS

I have designed experiment in which all subjects are performing the same exact task, with no variations. The task is a tracking task in which the subject has to keep a marker inside a circle, using ...
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21 views

Newbie question: can a categorical IV be included in ANCOVA with only a couple observations in 1 group

I think this is a pretty simple question, but I have been unable to find an appropriate answer. Please help. I have identified a sub-sample of my treatment group that were taking a medication that ...
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32 views

Which statistical test to use for multiple IV's and DV's

I am conducting a study over post-concussive symptoms. I have two groups, a non-concussed group and a group who has been concussed. I will have three IV's (depression, anxiety, and neuroticism) and ...
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20 views

How to compare continuous variable and dichotomous variable and means differences

I have run an experiment on perceived size of discs in peripheral view. Participants had to adjust the peripheral disc in order to match it to a central one (fixed size). People performed the task ...
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21 views

SPSS Multinomial Logistic Regression: Change Significance (α) Level

I am currently running multinomial logistic regression (dependent variable = 4 categories, independent variable = 2 categories). I'd like to run the significance level of the model at α = 0.01 and α = ...
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1answer
84 views

2SLS for sales data (problem with IV)

I am given a task to perform an analysis on marketing data and to find out if the prices for the products and marketing budget are set correctly. In order to do it, I need to find a suitable model ...
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41 views

ARIMA(0,1,0) model in spss expert modeler

I have a set of data which is ARIMA(0,1,0) in nature. I cross checked it myself, by residual ACF and PACF. In SPSS I am seeing expert modeler is choosing Holt Winter's Additive model, but if only ...
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1answer
24 views

Mediation through multiple regression when you have 2 or more than 2 IVs

I have 4 IVs 1 MV and 1 DV. The literature i have gone through to test mediation through path analysis (SPSS) only illustrate inclusion of 1 IV 1 MV and 1 DV. Is it possible to first check undertake ...
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14 views

Stack data and using seasonal ARIMA

Data is a group of courses (40 of them), each course has a number of students with year (2000-2015, 16 years). I would like to parallel up the data so that all course forecasts are computed from ...
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0answers
54 views

SPSS - two way repeated measures ANOVA - how do I read the output and what do I report?

In most but not all papers I ve read, the F value and df was presented. But as I want to comply to the research code I also would like to report them. However, also after reading tutorials on the ...
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1answer
83 views

Analyzing constructs with multiple items in SPSS (Regression & Correlation)

I am doing a master's thesis on the roles played by Perceived Bank Image, Perceived Service Quality and Perceived Satisfaction in predicting Customer Loyalty. My questionnaire consists of several ...
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1answer
38 views

How do I compare scores on two different scales but one group?

My hypothesis is: "Women who score high on self-esteem will score low on upward comparison." I have all the data cleaned up and the total scores found for all my scales, I am just unsure what to do ...
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6 views

How should i set up a cox regression using the following variables? SPSS

I am completely unfamiliar with Cox regressions and most statistical analysis. My advisor for my undergraduate research project suggested that I use this type of regression on my data. I have already ...
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30 views

Complex Factorial Manova in R/SPSS

Hello I have been struggling for many days with this problem. The situation and data set are following. The data set comes from an experiment that asked subjects (ID) to compare several CVs on ...
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33 views

Two-stage least squares SPSS

I'd really appreciate any help anyone can give me. I have this dataset that I'm using to test X -------> Y (Firm Performance), which is moderated by my moderator M. I have a previous year's value for ...
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1answer
31 views

Same rotated component matrix in Factor Analysis despite using different normalizations

I'm using SPSS for factor analysis with these options: ...
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1answer
40 views

MIXED MODEL - can a fixed factor be continuous?

I am using the linear mixed function in SPSS and want to determine whether a continuous variable (attendance) has an effect on the repeated measurement of my DV ...
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22 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
64 views

Calculate thresholds of factor analysis output to classify data to 5 classes

Suppose that we calculate a composite indicator for some companies using Factor Analysis (FA) by combining five features to one output (calculate weights of input features). This is histogram of ...
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13 views

Multiple imputation of lungitudal, time-unstructured data in SPSS

I have a longitudinal data set of home measurements of some disease-related physiological parameters that have been sampled throughout a period of 16 months. Of course there is some degree of missing ...
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1answer
71 views

How to insert my data in SPSS for Roc curve [closed]

I want to draw a roc curve in SPSS and I don't know how to insert my data in SPSS. The data I have are: ...
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1answer
41 views

When the regression line is not linear

I performed a regression analysis with two datasets, each of which has size 50. One dataset is called Spatial % and the other ...
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18 views

On interpreting the statistical significance of R squared

I have performed a linear regression analysis to two series of data, each of which has 50 values. I did the analysis in SPSS and as a result got a table which says ...
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1answer
57 views

Identical VIF/Tolerance scores - Multiple regression

To begin - I am extremely bad at stats. I am running a multiple regression analysis on a dataset to predict one variable from two others. There were three independent variables(IV) before, although I ...
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16 views

Remove estimated effect of independent variable on dependent variables (interval/ratio) using linear regression

Question: Can we use unstandardized coefficients derived from linear regression to remove the effect of an independent variable on the dependent variable? I have a large dataset and suspect that an ...
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19 views

Interpreting Binary Logistic Regression

I am using SPSS to analysis a specific outcome (Y or N) after three different types of interventions (3 Groups). Using crosstable and chi-square I get a highly significant result with rates of outcome ...
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31 views

Multiple imputation in SPSS: Excessive iterations to converge?

I am doing multiple imputation in SPSS 23 to deal with missing data before running hierarchical regressions. I ran Ender's diagnostic macro which calculates Gelman and Rubin's PSR (potential scale ...
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1answer
33 views

How to Exclude Lower Order Lags from a Custom ARIMA Model in SPSS Forecasting Module

I'm trying to use an ARIMA model to generate forecasts using monthly revenue data that exhibits both trend and seasonality. I've used the Expert Modeler from the SPSS Forecasting Module to determine ...
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10 views

Multiple Regression approach and ANCOVA approach to check for homogeneity of regression slopes

Hi i have a mixed design set of data with one continuous variable of satisfaction with 2 levels (pre- & post-) and one categorical variable of Service with 3 levels (S1, S2, S3). When running ...
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1answer
81 views

ARIMAX Forecasting in SPSS vs. R

I'm using time series data containing both trend and seasonality. I also have 2 endogenous predictor variables that I would like to include in my model. In R I've used the forecast package to develop ...
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32 views

Test for comparing means of 3 measurements at 2 points in time

I want to compare the mean values of 3 measurements which were taken before and after a study. Measurements of specific vitamins were taken, e.g. vitamins C, D and iron, so I have 2 values for each - ...
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1answer
15 views

How to analyse differences in groups over time?

I have a data set which looks at the effect of diet on 3 different vitamin concentrations (eg. vitamin d, c, iron). There are two measurements for each vitamin - one at the start of the study and one ...
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1answer
59 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
86 views

How do I interpret interaction effects in an ANOVA?

I really need help interpreting interaction effects for my ANOVA output. Can I interpret anything, if they are not significant? For example I am testing the effect of internal and external corporate ...
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31 views

How do I report Helmert contrast when running ANOVA?

I am a German student, so my English might not be perfect. Sorry for that. I would like to know how I do report Helmert contrast. I ran a two-way ANOVA and I wanna write down my contrasts in my thesis ...
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1answer
17 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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2answers
28 views

Why would you use GLM Proc to predict group membership based on a categorical predictor?

Is there a “magic” number of meetings that a student needs to attend in a particular program that has a positive effect on 2nd year retention? University students, who are at risk of not being ...
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17 views

AVERAGES OF SETS

Am not really sure whether its handled in this field;but my question is: Suppose there are different sets of random numbers provided. Each set has exactly 16 digits ranging from 0 to 9,all randomly ...
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62 views

Is the ROC curve and estimated AUC from SPSS parametric or nonparametric?

I am using SPSS to generate some ROC curves, AUC and p values. According to SPSS manual, the AUC can be computed parametrically or nonparametrically. However, I do not see any option for that. There ...
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43 views

Iterative generalized least squares procedure in SPSS?

I want to test the 'poolability' of my data set for a logit regressions. Gatingnon and Reibstein (1986), proposed an iterative generalized least squares procedure to do so. Anybody has an idea how I ...
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34 views

How to check validity of 12 item questionnaire with a 7 point-likert scale against a 19 item questionnaire with a 4 point-likert scale

I have a 12 item questionnaire with 7 point-Likert scale (Perfectionism Questionnaire) and I would like to validate this against an OCD scale that has 19 items and 4 point-Likert scale. Additionally, ...
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0answers
19 views

SPSS Linear Mixed Models converging extremely slowly, 24+ hours [closed]

This is my first question here, I will do my best to not break any rules. My question is about Mixed Models in SPSS 19. I have used these models before with datasets n=2200 and my processing time ...
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2answers
77 views

Which statistical test should I use for my research proposal?

I am testing the effects of traditional mental health counseling versus culture specific counseling. Therefore, there will be two groups: one group that receives culture specific treatment and one ...
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0answers
29 views

In a linear mixed model what does the F value represent?

I am examining the output of my linear mixed model in SPSS and need to decide how to report my findings. I was considering just reporting the p-values. However, my supervisor wants me to provide more ...
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30 views

How to structure dataset and write syntax for mediation model with clustered data?

I have a dataset of 300+ students with teacher-reported data. There are 17 total teachers that reported data on the students. I would like to run a model that tests mediation where the mediator is a ...