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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Ran a logistic regression and fit my data to the predicted model but the predicted model is not overlapping the observed data

EXPERIMENT: Heaviness judgments of a variable weight to a standard weight (2000g). Independent variable/covariate: Weight (9 levels: 1920g, 1940g, 1960g, ... , 2060g, 2080g) Dependent variable: ...
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12 views

Does Sample Size Affect Partial Eta Squared values when running a Mancova or Ancova?

I am currently running an ANCOVA and MANCOVA for my research and need some help in terms of understanding the Partial Eta Squared(PES) values given to me off on SPSS. I am first wondering if with PES ...
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1answer
41 views

Two-way repeated measures ANOVA for 2 independant and 1 dependant with heart rate

I've been trying to find someone with a similar question for hours now, so sorry if this is a duplicate: I've got music (independent variable no. 1)-three different types (so 3 levels), emotion (...
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41 views

SPSS vs R: test of flatness in profile analysis

I'm trying to do a profile analysis on a relatively simple design, but I'm getting different numbers between R and SPSS for specifically the test of flatness My data looks like this: ...
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1answer
58 views

How to model percentage dependent variable using logistic regression in spss

I have some aggregated data. Indep. Dep. N 1.3 78% 23 1.2 67% 20 Indep var the average score of people in a particular region. Dep. var ...
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10 views

Log transformation in SPSS for percentage dependent var

indep_avg dep_% Frequency 3.4 5.6 67 5.6 2.5 96 3.2 6.3 23 I have some aggregated data. The Independent ...
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15 views

How to infer a relationship between a categorical variable with 2 categories, and a discrete, interval level quantitative variable?

I am looking to use SPSS statistics / graphs to infer a relationship between a categorical variable with two categories, and a quantitative variable (income) with defined parameters (meaning it is not ...
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31 views

How to analyze $2^k$ design with replicates in SPSS (or R)?

I want to tune the parameters of an optimization algorithm. Since there are $4$ parameters: A, B, ...
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22 views

Statistical relationship with both dependent and independent variables percentages that sum to 1

I'm trying to see if there is any relationship between the market share of a company (dependent variable) and the "tweet share" of this company (independent variable). The tweet share of a company is ...
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1answer
231 views

What's the relationship between initial eigenvalues and sums of squared loadings in factor analysis?

On the one hand I read in a comment here that: You can't speak of "eigenvalues" after rotation, even orthogonal rotation. Perhaps you mean sum of squared loadings for a principal component, ...
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32 views

Calculating Efficiency in ROC analyses

I don't have a detailed understanding of statistics and need help. I'm working on determining cutoff scores for a brief measure using SPSS. Background: we administered one measure at three different ...
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22 views

Which test should I be using?

I'm doing a longitudinal study and want to compare two sets of scores taken three months apart to see if there's a difference. I also want to see if there's a difference between the two age groups ...
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19 views

Multiple Imputation on date categories

I am doing multiple imputation using SPSS 22 and I have some issues that I'm not able to sort. I am working with a database of about 300,000 cases, of which approximately 10% of cases have missing ...
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9 views

Why does the beta of a linear regression change when entering another step? [duplicate]

I'm working with linear regressions in SPSS and am stumped by this issue. First, I'm entering my variables in three steps and get my beta value for Variable X in Model 3. Then, I'm adding another step ...
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22 views

Analyzing time-use data + questionnaire

I'm doing research among students at a major institution. My initial hypothesis is that students are reading less, especially books and print, while their time is increasingly spent interacting with ...
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23 views

How to compare before and after means between 2 different groups

I am doing a study with 34 participants and I calculated their fruits and vegetables consumption based on survey before and after the intervention. I also taken another measurement of stages of change ...
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13 views

Correlation and then a multiple regression

I have used a pearson correlation to see if certain variables that other people have found to predict the Dependent variable do occur (so I can use them as covariates later on). I then wanted to do a ...
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30 views

Correlation between interval and ordinal data

I am performing analysis to establish the correlation between personality (self-rated) and competency performance (line manager rated). The personality domains are the 'Big 5' and have been created ...
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1answer
163 views

Statistical analysis of relational database: is it possible and how?

I have been struggling with flat file databases and corresponding statistical packages for almost 20 years now (from Excel to SPSS, then Stata, and currently R). However, I have always had to convert ...
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11 views

SPSS Friedman post-hoc - determining best classifier

I'm a newbie, so sorry if the question is too straight forward. I'm comparing 5 algorithms on 10 different data sets. In SPSS I did a Friedman test, and the null hypothesis is rejected. Now I would ...
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26 views

comparing survey responses

I have requested 30 participants to answer the same question about 100 images: "How easy is it for you to recognize this image?" on a scale from 0 to 100, where 0 is easy and 100 is difficult. I want ...
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22 views

Correlation between Ordinal scale and multiple response question/ tick all that apply

I am trying to correlate the Ordinal scale variable, that is: Mother's education( Lower, Medium, and High) with the "career choice question, with multiple response option (tick all that apply).... How ...
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25 views

SPSS - Correlation between ratio (age) and a nominal choice (A or B)

My project group and I have conducted an A/B test for a class on our university. The respondents were asked to fill in their age and had to choose between two options: Design A or Design B. I want ...
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1answer
45 views

Continuous variable vs. Nominal variables

I have a file with a continuous variable Y, and a set of 20 binary variables (yes/no). I wish to do the following two tasks: To find which of the 20 variables are related to the variable Y, i.e., ...
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45 views

Binary logistic regression: all (B) at .000? (SPSS)

I am a master's student with no stats background! In the 'Variables in the Equation' output I have the following: ...
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65 views

Analyzing Likert Data for Correlations Between Grouped Items

I'm analyzing data from a 1-5 Likert Scale, and I'm not sure which test to use (I'll be using SPSS). My issue is that I'm not trying to determine the correlation between all items, but the correlation ...
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13 views

What makes for a “repeated measure” when using LMM?

I am conducting a LMM in SPSS and seem to gotten turned around. I have 3 time points and 2 treatment groups. But where does one specify the time points? Options seem to include: Specifying "time" (...
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11 views

LMM: Different findings in tests vs. estimates of fixed effects

In a nutshell: If I run a LMM (2 treatment groups, repeated measure of time--at 3 time points), under my Type III tests of fixed effects, my F-statistic is significant at the p<0.05 level. However,...
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27 views

What analysis should be applied to this survey?

I conducted a survey where I presented the participants a advertisement strategy. They could answer the questions: a) What is your general acceptance b) Does your acceoptance increease when X (for ...
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25 views

LMM Modeling F vs t statistics (and time)

I am running a linear mixed model analysis in SPSS. 40 participants, 2 treatment groups, each assessed at 3 time points (that varied between participants, so everyone got assessed at pre-treatment, ...
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2answers
69 views

Ordinal or binomial regression?

I have designed a question and now intend to use SPSS to analyse the results: My dependent variable is: intention to vote. Yes or No. My independent variables are: a series of question ranked on a ...
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1answer
16 views

What tests to analyze the following hypotheses with nominal data?

I have a set of questionnaire data to analyze the working culture for respondents. (There are four existing cultures; a,b,c and d) Variables including Gender, Organization, Public/Private Sector, ...
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53 views

Can Cochran's Q test take a 3 level nominal variable as the response (instead of 2)?

I conducted a study using within-subjects (repeated measure) design for collecting nominal data. I have been reading a lot closet I get for a suitable test is Cochran's Q test since I have repeated ...
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1answer
19 views

Need to analyse missing values + difference in peaks

I am currently working on an analysis that compares heart rate data from multiple devices. In order to do this I recorder all the raw data in a table. Currently I am writing a script that will parse ...
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28 views

What statistical method should I use to model data?

I am trying to model a continuous numerical variable using a binary fingerprint (0 and 1)- I have used decision trees to model this, is this the best method to use? If not, what method would be best ...
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78 views

How to incorporate weight into linear regression in SPSS

I would like to know the proper procedure to execute weighted linear regression analysis. I have come across different tutorials about weighing in SPSS, but can't distinguish which is appropriate. ...
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1answer
52 views

Ranking questions based on how many participants answered “yes”

I have some data from a survey. In one question of the survey, participants were asked to choose one of nine objects from a given list. They then answered several "yes" and "no" questions about that ...
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15 views

Clarifying which ANOVA to use

This is a bit complex so I'll try to explain as succinctly as possible. I'm doing thesis testing and I need to make sure I'm getting it right! Basically, all participants underwent a decision task, ...
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1answer
35 views

Confidence Interval for prevalence

So I have the prevalence of lets say people who drink in a sample I collected. I know the total number of the population that was sampled. How can I figure out the 95% CI? Edit: For anyone looking ...
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2answers
30 views

What type of analyses can be used to predict a non-normally distributed DV?

My data set includes 435 randomly sampled cases; on the DV 406 participants report "no likelihood" of the DV (one score) and 29 participants indicated "some likelihood" of the DV (range: 10 points). ...
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8 views

Factor Analysis_number of factors in the suggested model is larger than in SPSS"s result

Based on the previous theories/research results, I build up my model research which includes 12 variables (11 variables are measured by at least 3 items for each of them, and a single item is used to ...
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23 views

What measurement level would binary data be?

I'm using decision trees on SPSS, and I'm not sure what measurement level my data should be in. The variables I am modelling are binary (0 or 1), and I don't know whether that would be classed as ...
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26 views

is it necessary to create dichotomous dependent variables to test for proportional odds for ordinal regression?

I have a data set that contains variables collected using a set of likert scales. I want to do a separate ordinal logistic regression with age, gender, and income as the independent variables and each ...
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1answer
58 views

Negative Binomial dispersion parameter in SPSS

I am working in accident prediction modeling and I'm using SPSS Generalized Linear Model procedure with Negative Binomial distribution and Log Link Function. Does anyone know the form in wich SPSS ...
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20 views

Hierarchical Multiple Regression & Partial or Semi-partial correlation

When conducting a hierarchical multiple regression, I understand that all covariates are entered into the first step in order to control for them. However, does SPSS control for the covariates using a ...
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1answer
54 views

How to perform ordinal regression with rank-based dependent variable?

I have a dataset I'm about to use for some preliminary testing. However, I've stumbled onto a puzzle which I cannot seem to figure out. https://drive.google.com/file/d/0BzfbOrk7Ans7UGdEbzZtR2NqT0k/...
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13 views

Negative Cronbach's Alpha

I run the Cronbach's Alpha based on the result of the Exploratory Factor Analysis, and 5 factors found. 1st is positive with Alpha, 2nd is low with Alpha, 3rd, 4th and 5th are having the negative ...
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1answer
6 views

Variables in the measure column

This may sound a simple question but I just want to confirm. Is ID of participants continuous, nominal or ordinal data?
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1answer
76 views

How to handle empty data in linear regression?

This question may seem like a duplicate but I haven't found quite another one that fits my case. So I am trying to run a linear regression on some variables including 1 dichotomous IV (Tool) that is ...
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15 views

violation of independence assumption for comparison of means

I have a binary dependent variable (following a pattern by my subjects or not). I want to test the relationship between a characteristic of subjects (i.e., personal innovativeness) - categorized into ...