2
votes
1answer
24 views

Can I use the chi-squared test of independence with skewed data?

I have two variables, both categorical, one with skewed responses. How do you deal with skewed data in the chi-squared test? Are there any other relevant tests? I want to perform the test in SPSS.
0
votes
0answers
17 views

Correlation between a categorical predictor and a continuous outcome variable

How do I perform correlation between a categorical antecedent variable and a continuous outcome variable? Like for example, correlating EACH attachment style with another variable, i.e, social ...
0
votes
0answers
29 views

How to analyse the relationship between many categorical variables

I have a number of categorical variables, each with varying numbers of levels: gender of client (m,f) age group (0-8, etc.) diagnosis (mild, moderate, severe, profound) location (community, ...
3
votes
0answers
79 views

Binomial logistic regression in SPSS using survey weights

I am running a logistic regression in SPSS with a sample that uses survey weights. The sample size is 1000 and the weights are along the lines of .86 or 1.23 depending on the case. I am using the ...
1
vote
0answers
41 views

Multinomial regression analyses

My dependent variable is categorical (with 3 levels) and my predictor variables are a mix of continuous (age in months, test 1 score, test 2 score, test 3 score) and categorical (gender). I believe I ...
1
vote
2answers
159 views

Logistic regression, SPSS ignores my reference category and assumes another one

I am modelling logistic regressions in SPSS, the same model for different countries (well, with slight differences in the independent variables set due to collinearity diagnosis and stepwise results). ...
1
vote
1answer
158 views

Factor vs. Covariate in SPSS MIXED

I am using the MIXED command in SPSS to run a multilevel model and was wondering what the difference is when using a dummy coded factor either as factor (via the BY command) or as a covariate (via the ...
5
votes
2answers
179 views

Correlation between vegetation and erosion

I am wanting to find the correlation between two variables: a categorical vegetation variable (with categories 1-4) and a continuous variable of erosion (with values anywhere between 0.2 and 9). I ...
1
vote
0answers
67 views

Is it possible to plot factor scores in a graph?

I have 5 factor scores which were saved out from Mplus6 to SPSS using commands below. Savedata; SAVE=fscores; I have the variables in SPSS and used them in some ...
2
votes
1answer
2k views

Correlation between scale and categorical variable

I am trying to find the correlation or association between a categorical variable - classes from 1 -4 from a GIS (geographic information system) classification - and a continuous variable with values ...
1
vote
2answers
176 views

Correlation and categorical variables

I have a series of categorical variables I have, up until now, been undertaking correlation analysis with. The bulb has now lit up and I'm realising that I've used completely the wrong analysis if I ...
0
votes
0answers
40 views

Analysing possible effect of categorical response on ordinal response?

I have recently begun to analyse data from a survey where participants rated 64 images of models on a Likert scale and then selected whether they consider the model in-group or out-group. I am ...
0
votes
1answer
233 views

Multivariate analysis for factors affecting survival

I am doing an audit looking at survival for a particular cancer. I have done a univariate analyses and Kaplan-Meier curves using Prism Graphpad looking at prognostic factors which may affect survival. ...
0
votes
1answer
397 views

Continuous and categorical variables in SPSS GLM

I'm currently writing the results part of my thesis and I'm extremely bad at statistics. My variables are Dependent variable: Response time (with two levels) Factor: manipulation variable (exposing ...
1
vote
0answers
75 views

How to analyze category responses

In a survey questionnaire I asked participants to give a priority ranking to the question "What factor motivates a lot for wringing out loyalty, and productivity?", with the following choices: "Good ...
0
votes
0answers
14 views

Reduce Sample Size (Categorise??) [duplicate]

I have been looking for an answer to my question but havn't been able to find any literature documentation or help in regards. I have a large dataset which I need to further analyse. Because of this I ...
1
vote
1answer
158 views

Multiple regression with dummy variables

I need to calculate MR but my data consists of many dummy variables. I had a question in my survey that asked for the budget/month. But instead of giving the option to fill in a value, I offered ...
0
votes
1answer
47 views

Need help selecting test for nominal IV with categorical DP

I am going to attempt to give you as much background as possible. My independent variable is nominal and describes the number of days after which an insect was exposed to new conditions (0,1,3,5,7). ...
0
votes
1answer
103 views

spss: working with two binary/dummy variables

Am trying to set a few binary/dummy variables against each other, i.e. propensity_to_dance and gender. I assume that it' ok to ...
0
votes
1answer
964 views

How do I interpret logistic regression output for categorical variables when two categories are missing?

I am using binary logistic regression; the dependent variable is 1 or 0; the independent variables are two groups: the first group includes continuous variables (...
0
votes
1answer
198 views

Mean regression factor scores and attributes cross tabulation yields. Why are all expected signs reversed?

I ran a factor analysis on 20 reasons for purchasing 4 different goods. These are ranked on a Likert scale from 1 to 5 with 5 being "extremely important", 4 "important", etc. I extracted 4 factors ...
1
vote
1answer
172 views

Multinomial regression with categorical choice and predictos and factor analysis

I have a non-ordinal categorical dependent variable with 3 choice outcomes and 20 ordinal categorical predictors and want to do a multinomial logistic regression. However, I want to reduce the ...
1
vote
1answer
1k views

Cronbach's alpha continuous and dichotomous data in SPSS

I have one question about using SPSS to calculate Cronbach's alpha of a measure that draws on two types of items: one yields ordinal data and the other dichotomous. The ordinal data are produced ...
5
votes
3answers
927 views

How to control for market return in an (SPSS) OLS?

Please consider the following panel dataset: ...
1
vote
2answers
1k views

SPSS dummy variables in OLS

I have a timeseries dataset holding stock data for a large set of companies. Assume the following subset, where obsDay is the observation day (148 days in reality) ...
3
votes
1answer
82 views

How to handle news coverage ratio in a regression analysis?

I have collected data from Twitter, Google and Wikipedia to look for any correlations (and perhaps predictive value) against the stock market. I have collected daily Twitter, Google and Wikipedia ...
5
votes
1answer
2k views

Generalized estimating equations output in SPSS

I am hoping to confirm that I have a suitable way to analyse the different proportions of people who are categorized as left lateralised on the one hand, or bilateral/right lateralised on the other in ...
3
votes
2answers
2k views

Factor analysis for ordinal variables that have different categories

I have a data set that contains about 40 categorical variables that are taken as independent variables (and believed to be related to some unobservable human resource factors) and 4 categorical ...
2
votes
1answer
452 views

Association between 2 categorical data (using SPSS)

In a sample of 250 cardiac patients who have had a myocardial infarction and just left hospital, I asked them how important it was to them to know several issues, such as "How important is it for you ...
0
votes
0answers
819 views

How to perform correspondence analysis on ordinal data in SPSS?

I have 500 rows and three columns. Two of the variables (that i want to analyze) are in ordinal form and the other in scale. However, when i run the correspondence analysis wizard in SPSS i can only ...
2
votes
3answers
13k views

How to correlate ordinal and nominal variables in SPSS?

I have imported an Excel document in SPSS which contains around 500 entries. Three columns are defined, using Likert scales. I have substituted textual labels of these scales with numerical values ...
6
votes
1answer
6k views

How to perform principal components analysis on binary data (using SPSS)?

I have a dataset with a large number of Yes/No responses. Can I use principal components (PCA) or any other data reduction analyses (such as factor analysis) for this type of data? Please advise how I ...
4
votes
3answers
9k views

Can I use multiple regression when I have mixed categorical and continuous predictors?

It looks like you can use coding for one categorical variable, but I have two categorical and one continuous predictor variable. Can i use multiple regression for this in SPSS and if so how? thanks!
5
votes
2answers
15k views

How to deal with non-binary categorical variables in logistic regression (SPSS)

I have to do binary logistic regression with a lot of independent variables. Most of them are binary, but a few of the categorical variables have more than two levels. What is the best way to deal ...