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

learn more… | top users | synonyms

0
votes
1answer
30 views

Spearman's - monotonic? [closed]

Deas, One assumption for Spearman's correlation is that data have to be monotonic .. I tried to do scatterplot in spss, but I get the following graph that I couldn't decide if it is monotonic .. What ...
0
votes
0answers
10 views

Assistance with hazard ratios

I want to compare car accident deaths in two groups of people aged 18-24 (lets use this as the reference) and 24-30 after a certain law was changed using a Cox hazard model using SPSS version 22. I ...
0
votes
0answers
9 views

Missing value replacement when 3 out of four scale items are missing

I have a subscale with four items and 316 participants. Five participants missed all four items, two participants missed three of the four items and five participants missed only one item (three ...
0
votes
0answers
14 views

Iinterpretation of coefficients of multiple comparisons in a logistic regression model

I'm confused about how to interpret coefficients in relation to the reference categories. I have two variables, A and M. A is a 3-level variable and M is a 4-level variable. The reference category for ...
1
vote
1answer
25 views

Have conducted a bivariate correlation - want to identify the outlier - is there a 'statistical' way to do this?

I run correlation (on SPSS) between a governance indicator 1996 and the same governance indicator in 2012. As would be expected there is a near perfect correlation. What I am interested in, however, ...
0
votes
2answers
42 views

Dealing with Categorical variables in Multiple Regression

I have a data having 2 continuous and 4 categorical variables. Each categorical variable has 3 levels. I want to know how to include the variables in the model. I am using SPSS Variables: Sales - ...
0
votes
0answers
31 views

Different means with barchart and descriptives in SPSS

I have a dataset (in SPSS 22) with different measurements of children, with the children in rows and with the measurements as variables in the columns. For example, the activity levels of the children ...
0
votes
0answers
5 views

Two Data Collection Method Groups

I have collected around 20 respondents by post; and by email around 150 respondents. I would like to know whether I can combine the two groups, the independent sample t test shows that there is a ...
0
votes
0answers
13 views

How to identify contributors in groups of people

I have a set of 120,000 people. These people are assigned to 10 million groups. Each of these groups have a target variable indicating the kind of output it made (A, B, C or D). I'd like to identify ...
3
votes
0answers
78 views

SPSS: Pearson's r not significant but confidence intervals do not include 0

I have calculated the value of Pearson's r between two variables in SPSS, two tailed. Sample size is 81. The r value is -.21. The p value is .06. When I compute the 95% confidence intervals using ...
3
votes
1answer
43 views

Pearson Correlation for Clustered data

I have a sample that was drawn using cluster sampling. Let say I have variables x and y, and I would like to check the significance of correlation between those two variables in SPSS 20 taking into ...
0
votes
0answers
19 views

How to treat “Missing Value Analysis” test results (problems)

I have a problem with Missing Value Analysis. I am using SPSS version 20. I am trying to test whether missing values are at complete random. As I know in order to ensure missing values are completely ...
0
votes
0answers
22 views

Should 'do not know' be included when reporting summaries of survey results?

When reporting the results of surveys, we often list the percentages of respondents who gave different answers. However, these percentages could be calculated including people who said 'do not know' ...
1
vote
1answer
66 views

Does free SPSS 16 actually exist? [closed]

My mother heard about free SPSS 16 and gave me the task of finding a safe download of it. However, I can't find any site (except torrents) that actually have it available, they all seem to use SPSS 16 ...
1
vote
1answer
254 views

Binary or Multinomial Logistic Regression in SPSS: Interpretation and Reference Categories

I am trying to analyze my data using Multinomial Logistic Regression whereby my dependent variable is a clinical outcome (sick vs healthy) and 1 independent variables (Factors) are in several ...
0
votes
2answers
55 views

Which test do i choose to conduct on my Likert scale data?

I have been doing plenty of research into which test I should use on my Likert scale data and i am becoming more confused as there are so many people saying different things. I am currently doing my ...
0
votes
0answers
26 views

SPSS Repeated measures with different pre-post measures

I have the following data: 20 participants, each one going through 2 types of treatments (A & B) at 3 different sessions (times). For each treatment session, i am collecting 6 "normal" ...
2
votes
1answer
28 views

Multiple value Chi Squared test in SPSS

I am currently doing a study into factors that affect mortality in a particular type of bacterial infection. I would like to compare certain patient characteristics. One of which is the specialty ...
0
votes
0answers
37 views

Compare regression coefficients within one sample

I run two univariate linear regressions within one sample (same subjects, two different conditions). Now I would like to know how to compare the regression coefficients in order to find out whether ...
0
votes
0answers
43 views

SPSS Amos Binary Outcome - Model Fit

I was just wondering if anybody could help me, I'm conducting a path analysis in SPSS Amos with a binary outcome. I've specified the variable as binary using Tools>Data Recode, I've then calculated ...
2
votes
0answers
17 views

Methods for measuring snowball effects in a “complete” longitudinal dataset

I'm looking for ways to test for "cumulative advantage" effects in a longitudinal dataset (see image) I guess the data set is principally similar to this: http://www.caldercenter.org/whatis.cfm , ...
0
votes
0answers
20 views

SPSS mediational analysis help

I'm doing a psychology project and I'm struggling with statistics (SPSS) especially on meditational analysis. I have searched all over my notes from my bachelor degree but there is nothing on ...
1
vote
1answer
144 views

Difference in difference using spss

I have 2 groups of patients (control and treated) and 1 variable measured at two time moments (before and after treatment). Using paired T test I am able to determine the mean (with 95%CI) difference ...
0
votes
0answers
17 views

How to get odds ratio when combining multiple tests in logistic regression in spss?

we get odds ratio in logistic regression for predictive accuracy of a test. how do we get one odds ratio from combining more than 1 test in predicting outcome? how do we enter the data to get this in ...
0
votes
0answers
110 views

Time series: Stationary R-squared vs R-squared (Forecasting in SPSS)

I would like to check how two time series are correlated - how one of them predicts the other one. I have data for 27 years. I conduct my analysis in SPSS (Forecasting command, ARIMA) and I get: ...
0
votes
1answer
41 views

When making a predictive model that is predicting a continuous outcome, how does one arrive at the final prediction?

For instance, a prediction of 1 million could be: A weighted average of various predictions. ex. a .5 chance of 2 million, a .5 chance of 0, for an expected value of 1 million; or The prediction ...
1
vote
1answer
50 views

Do I run a one-tailed or two-tailed test when running Spearman's correlation between interval and ordinal data?

I have one interval variable on a 1-25 point interval scale, i.e. placement test scores where 25 is the highest competence score (data not normally distributed), and six different ordinal variables on ...
0
votes
0answers
9 views

What kind of statistical method is recommended to compare ratio in pre-test and post-test

I want to compare two different ratios. When this ratio is close to 1 it shows the better stability in the body. Would you please guide me that which statistical test is better for this situation? ...
1
vote
0answers
44 views

Understanding repeated covariance types in SPSS?

I am working in SPSS on a repeated measures linear mixed model and I am having a really hard time wrapping my head around how to select a "repeated covariance type". The options are: ...
0
votes
0answers
15 views

How to get/calculate confidence intervals for slopes of the continuous*categorical interactions?

Not sure if this should be in Stack Exchange or here, but here goes. I have a linear mixed model in SPSS, and I want the confidence intervals for slopes of the continuous*categorical interactions. ...
1
vote
1answer
29 views

Multinomial logistic regression low classification rate

I am running a multinomial logistic regression with SPSS and I have encountered a problem (?) with my data. I have a dependent variable (DV) with three categories, five independent variables (IV) as ...
0
votes
0answers
71 views

Please help with basic interpretation of an insignificant interaction. (With significant main and conditional effects)

I have a very basic understanding of statistics, and have done many correlations and regressions or simple t-tests, but never an interaction and it is confusing me a bit. I only need to understand the ...
0
votes
0answers
17 views

How to check mediating effect of categorical data

Kindly suggest a statistical test in SPSS for the following type of model: X = dependent variable (categorical with 3 categories) Y = dependent variable (scale) M1 = mediating (categorical with 3 ...
0
votes
0answers
11 views

Data Mining technique for preferred vendor problem?

Currently I use open auction method for selecting a transporter and want to switch to preferred transporter where I would select a transporter based on my preferred transporter list. The project ...
1
vote
0answers
40 views

Questions about G*Power

Since I found an insignificant result, I performed a power calculation in G*Power. But I am not entirely sure if I input the right number in some fields. My design is a 2(between Ss) x 2(between Ss) ...
0
votes
0answers
35 views

What to do with interactions that improve the model fit but are not significant?

I'm using Poisson loglinear regression (from Generalized Linear models, SPSS) to analyze different patient variables that influence LNT-lymph node yield-(poisson distribution). After removing the main ...
1
vote
1answer
26 views

SPSS cslogistic note

I'm calculating odds ratios using the following model. I need to know what the last note means. I have stated the levels for odd ratios for the levels I'm interested in, so I don't know what SPSS ...
1
vote
2answers
87 views

R and SPSS differences in pca loadings

I performed two principal components analyses: in R and in SPSS - using the same dataset and the same variables. I got the same results - at least to some point. The eigenvalues are the same (I used ...
4
votes
1answer
75 views

Principal component regression analysis using SPSS

I have done multiple regression analysis (MLR) of my data and find out $R^2$ and $r$, and then to remove multicollinearity problem I used PCA. This analysis generated PC equal to my variables, I ...
1
vote
0answers
21 views

SPSS GENLINMIXED for crossed groups

thank you for any help you might offer. I have data in which the groupings are crossed, not nested. Each player responds to the same set of items. In MIXED, I give a separate intercept to each ...
2
votes
1answer
81 views

Generalized linear model: link function Power(-1)

During study our of statistics in my psychology coursework, we had to teach ourselves how to use generalized linear models in SPSS (only basic knowledge). For an exam we may also use generalized ...
0
votes
2answers
78 views

mediation analysis when mediator is categorical (SPSS)

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

Compare Means of Groups with Unequal Sample Size

I have to compare two groups of data and see whether there is a significant difference between the means. I wanted to perform a Paired-Samples T-Test with SPSS, however, it will only focus on a part ...
0
votes
0answers
46 views

Estimated marginal means and means from descriptive statistics - interpretation in ANCOVA?

I ran an ANCOVA which proved that the covariate is significant. If i understood right, the estimated marginal means show what are the means of the DV when we account for the covariate. Then we could ...
1
vote
0answers
12 views

Best Multiple Imputation Method for Multiple Surveys Mixed Together, Presented Randomly?

I am working with a dataset containing data from 15 different surveys. The surveys were presented all as one battery to participants, with questions from all surveys essentially placed into a pool and ...
4
votes
3answers
318 views

How to handle with missing values in order to prepare data for feature selection with LASSO?

My situation: small sample size: 116 binary outcome variable long list of explanatory variables: 44 explanatory variables did not come from the top of my head; their choice was based on the ...
0
votes
1answer
35 views

How do you suppress imputed data and only display results for the pooled data?

I've done 15 imputations and am now running various tests on the new data, but all I'm really interested in is the pooled results at the end. The long list of imputations (especially in a test like an ...
1
vote
0answers
75 views

How to: repeated measures anova and Friedman's test with multiple imputations for missing data

I have a study where patients were measured pre-operatively (time_pre), post-operatively (time_post) and long-term follow-up (time_lt). I have 60 subjects. Data consists of: 5 scale variables ...
0
votes
0answers
11 views

How to calculate Weighted mean using SPSS [duplicate]

What is the proper way to calculate Weighted mean in SPSS? Why does the weighted mean comes in decimal in proportion test in SPSS?
0
votes
0answers
59 views

Scatterplot correlation with covariate (partial correlation) in SPSS - how?

I'd like to make a scatterplot of a partial correlation - so a correlation with covariates. How should I do this in SPSS? If necessary, I could also do it in R. The most important thing is to show the ...