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

learn more… | top users | synonyms

1
vote
1answer
99 views

45th and 55th percentile

I have a series of data from a household budget survey and want to do the following in SPSS: Identify the food expenditure shares of total household expenditure that are at the 45th and 55th ...
4
votes
1answer
120 views

Different shapes of an ROC curve

What are the possible shapes of an ROC curve? Is it necessary for an ROC curve to be shaped like a normal distribution curve? Can we regard the following two curves as ROC with the area under the ...
0
votes
0answers
26 views

Replicating SPSS factor analysis/PCA in R [on hold]

I am trying to replicate SPSS factor analysis/principal component analysis results in r using two previously suggested methods, but neither has succeeded. (What are the differences between Factor ...
0
votes
1answer
28 views

How can I correlate groups of variables?

I have conducted a survey to find out the correlation between organizational justice and turnover intention within an organization. So, in the survey, I have asked some Likert-scale questions around ...
1
vote
1answer
316 views

I'm not sure how to interpret my binary logistic regression output from SPSS

My dependant variable is diagnosis of cancer malignant being 0 and benign being 1. And my covariate is mean radius (of the tumour). I get this: ...
0
votes
0answers
17 views

statistical modelling for imbalanced data

I am dealing with a binary response (good/ bad) type data set of size 2153, which reflects a dependent variable. Out of these, only 67 are in favor of "bad" and the remaining are of "good". Also, i ...
1
vote
0answers
14 views

Sensitivity Analysis used in SPSS Neural Network Package

What is the sensitivity analysis used in SPSS Neural Network's independent variable importance calculation? The explanation provided by SPSS is very vague. Is it the same as the semipartial ...
0
votes
0answers
23 views

Linear Probability Model Construction

I am dealing with a questionnaire consisting of 15 questions. I performed a factor analysis to all the questions and it has given three factors each consisting of 5, 7 and 3 numbers of questions ...
0
votes
1answer
273 views

How do I convert unstandardized RMR estimates into standardized RMR estimates?

I am having difficulty turning unstandardized RMR estimates from AMOS software output in a SEM into standardized estimates to enable suitable interpretation. Can someone give me advice on where to ...
0
votes
0answers
12 views

Performing t test, one-way ANOVA from mean and SD using SPSS

I have the following summarized data: Group 1: n=44, mean 12.1, SD 2.0 Group 2: n=56, mean 13.2, SD 2.5 Group 3: n=42, mean 12.7, SD 2.3 Is it possible to perform the t test comparing means of group ...
-2
votes
0answers
11 views

How can i combine the three variables into one single measure in SPSS? [on hold]

How can i combine the three items into one single measure that indicates whether the respondent has taken part in at least one of the three activities treating it as a single dimension repertoire ? ...
1
vote
1answer
288 views

SPSS - Calculation of confidence intervals in estimated marginal means of repeated measures ANOVA

I used SPSS to do a repeated measures ANOVA including one within- and one between subject factor. Let's say the between-subject factor is treatment group with levels treatment and control, and the ...
0
votes
0answers
10 views

Hypothesis for customer dissatisfaction

I am doing research paper that contain the hypothesis of "Building conditions generate customer dissatisfaction among buyers and/or renters". Both building conditions and customer dissatisfaction are ...
0
votes
2answers
615 views

mediation analysis when mediator is categorical (SPSS)

I want to do a mediation analysis, with the following variables: ...
0
votes
3answers
956 views

Unequal sample sizes for two-way repeated measures

I have 3 different treatments with the observations of 6 different repetitions. However, all these different treatments (groups) have different numbers of patients. The first group has 26 patients, ...
0
votes
0answers
7 views

How do i input binary data correctly for generalised linear models in SPSS [closed]

I am looking at which habitat variables might be explaining the presence of an organism. I'm completely hopeless at maths and therefore statistics is even worse for me. The data set i have is pretty ...
0
votes
2answers
264 views

Can AMOS be used to perform logistic regressions?

I need to compare 11 groups of data, for the same relationship. My first thoughts were to create 11 regression equations (one for each), and to compare parameters between groups. Problem is that ...
0
votes
0answers
15 views

Multiple time points, relation between quantified change in environment and sample population

For a current research, I'm trying to view a relation between a country-level variable index and the financial structure of companies in that country over time. I have annual data for four years, ...
0
votes
0answers
70 views

How to report results from a linear mixed model “test of fixed effects” in SPSS?

What is the appropriate way to report results for linear mixed model based on the "test of fixed effects" table in SPSS? Is it just (F=xxx, p=xxx)? This isn't my data but this is an image I found of ...
0
votes
1answer
18 views

Generalized linear model with random effects for skewed data

I'd like to use SPSS Generalized Linear Model to analyze a dataset of insects collected from one particular species of vegetables. I have following variables: NUMBER (number of insects collected) ...
0
votes
0answers
10 views

Approaches for multivariate nonlinear (but parametric) regression?

I have some data that is nonlinear, but is curvilinear. It is two factors and a dependent variable. Each factor has a pretty good fit when applying a growth curve when compared against (this is ...
1
vote
1answer
447 views

To find significant differences between means using repeated measures GLM

I am new in using SPSS and stuck with General Linear Model [which is just linear model] procedure. I have 8 cognition variables like latency, thigmotaxis, spatial, quadrant, nt quadrant, proximity, ...
3
votes
2answers
53 views

What is the relation between singular correlation matrix and PCA?

Can anyone kindly give me some information about the statement (last sentence) at the end of below definition. What does it mean by "It can be used when a correlation matrix is singular"? This quote ...
0
votes
0answers
19 views

within group agreement, intra-class correlation, one way ANOVA to justify data aggregation

I am working on my research involving aggregating individual data into group data. Predictor: Task conflict (3-item scale) Process conflict (3-item scale) ...
0
votes
0answers
16 views

Multiple regression in SPSS

I am trying to figure our which statistical analysis is best for my research. I have 6 cont. IVs and 1 cont. DV as well as several extraneous variables. For my main analysis I want to see if any ...
1
vote
1answer
306 views

Regression with multiple dependent variables and 2 sets of multiple independent variables

In my data I want to be able to determine which set of IVs (there are 8 variables total, 4 in each set) does a better job of predicting a set a DVs (there are 4). I know I could use multivariate ...
0
votes
1answer
107 views

3 way mixed ANOVA & pairwise comparisons effect size

I have a 3 way mixed ANOVA, where I have 2 significant main effects, one significant two way interaction and a significant three way interaction. I've been told to not describe the lower order ...
1
vote
0answers
29 views

Needs suggestions and help for my study

My research question is 'to what extent does patient-provider trust impact African American males' compliance to prostate cancer screening recommendation? This is an exploratory study. I have no ...
227
votes
23answers
76k views

Python as a statistics workbench

Lots of people use a main tool like Excel or another spreadsheet, SPSS, Stata, or R for their statistics needs. They might turn to some specific package for very special needs, but a lot of things can ...
0
votes
0answers
19 views

How to determine which variables need to be trimmed in PCA or Factor analysis?

Background: I'm working with log returns for about 400 tech stocks. I want to use PCA to reduce these into principal components (Internet companies, software developers, circuit board manufacturers, ...
3
votes
2answers
9k views

Intraclass correlation coefficient interpretation

I'm having a look at the intraclass correlation coefficient in SPSS. Data: 17 participants rated two lists of 9 & 7 items from 0 to 5 (0 being unimportant and 5 being very important). All ...
2
votes
1answer
17 views

SPSS computing pairwise comparisons after repeated measures ANCOVA, standard deviation question

I am reporting standard deviations for pairwise comparisons of adjusted marginal means. SPSS gives me the standard error that I can convert, but I am unsure if SPSS uses the equivalent of N or N-1 to ...
2
votes
1answer
23 views

Can I do a dependent t-test if pre & post were anonymous?

I am trying to analyze the following case study using SPSS. What I have done so far as part of my research is to conduct a case study to measure the affect the introduction of different technology ...
0
votes
0answers
11 views

Zero-inflated data? Comparing means in SPSS

I whish to know how to compare means with zero-inflated data. I tried to perform an ANOVA test but obviously comparing means it's impossible since some treatments are very rich in zeros. I'm studying ...
5
votes
1answer
69 views

Predicting variance of heteroscedastic data

I am trying to do a regression on heteroscedastic data where I'm trying to predict the error variances as well as the mean values in terms of a linear model. Something like this: $$\begin{align}\\ ...
0
votes
0answers
8 views

Negative Reliability for Pre Assessment BUT Okay Reliability for Post Assessment

I have gathered data from only 6 participants participating in a program. Before running my analysis, I wanted to check my reliabilities. The 2 item PRE assessment has a negative alpha. However, when ...
0
votes
0answers
14 views

SPSS ANOVA Can't Find Independent variable (factor)

I want to know if there is significant differences between groups. I have a string variable "Site" which is grouped into 7 (Values 1-"site A"; 2 - "Site B" and so on). The problem is i can't find ...
0
votes
0answers
8 views

Cronbach's alpha

I want to use the EAT-26 in my study , and the zero frequency is high in scoring because more than one answer represent zero in scoring ( never=0,rarely=0,sometimes=0) , so Cronbach's alpha is low ?! ...
0
votes
2answers
1k views

Where are the t-values in my pairwise comparisons?

I have data from a study with three conditions. The independent variable was within-subjects and within-items. I did an F1 and F2 analysis (= twice a repeated measures ANOVA) on the averages, by ...
1
vote
0answers
7 views

Measuring positive and negative items in Exploratory Factor Analysis

My research topic is related to motivation regarding product usage and the negative items mainly consist of problems that hinder motivation. My dataset is composed of both positive and negative items ...
0
votes
1answer
81 views

How can I find tendencies in specific cases between two groups?

I'm doing this project where we are investigating whether social networks can influence peoples distinctiveness. Briefly summarized, we have primed a group with a social media and another is the ...
0
votes
0answers
27 views

Kruskal Wallis test, with significant difference in variance

I would like to test my subset with ordinal dependent variable (measure in 1,2,4,8,16...) and ordinal independent dependent variables (0,1,2,3), and i choose the Kruskal Wallis test. However when i ...
8
votes
2answers
160 views

Balanced repeated measures design

Okay this is my problem: I have 12 participants. Each participant spent 3 nights in my lab doing a reaction time task at four timepoints during the night(12, 1, 2 and 3 oclock), with one week ...
0
votes
2answers
64 views

How to code open ended questions

I have some open-ended questions on a survey which i designed using survey monkey and had exported the responses from survey monkey directly to spss which means that the responses to the short answer ...
1
vote
1answer
210 views

optimal scaling / CATREG for imputed data

I have a data set with 5 different kinds of nutrient statuses and I want to see whether they are associated with categorical / ordinal grades at school. I have multiple covariates which I will ...
0
votes
1answer
27 views

Is Chi-square the right test to use when comparing multiple proportions

In my analysis, I have 4 groups: FLU-P (symptoms with virus) FLU-N (symptoms without virus) HCY-P (healthy with virus) HCY-N (healthy without virus) I am looking at the level of antibody ...
0
votes
0answers
20 views

Non Probability Analysis

I want to quantify the results of my non-probability survey. Are there any analysis techniques I can use that don't require or assume randomness other than descriptive?
3
votes
1answer
320 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 ...
0
votes
0answers
29 views

Analysis for a repeated measures design with covariate that varies over conditions?

I'm trying to find the correct analysis that will allow me to carry out the equivalent of a repeated measures MANCOVA with a covariate that varies over three conditions. Basically I have an experiment ...