How to deal with outliers in survey data?

I am searching for an article that discusses different approaches in dealing with outliers (survey data). Could anyone recommend a particular one? Thank you for your time!

11 December 2018 9,822 9 View

Are the calculated factor values (regression method) mean centered in a principal axis factor analysis?

I performed a principal axis factor analysis on four items and extracted one factor. I would like to use the factor values of the extracted factor for further analyses. To calculate the factor...

11 December 2018 5,675 3 View

Should I center the predictors in my moderator analysis?

I would like to perform different moderator analyses to test if a pornography consumption index can predict sexist attitudes and if that relationship is eventually moderated by gender. The...

10 November 2018 6,107 4 View

Is there a non-parametric version of the MANOVA?

I would like to compare 2 groups (pornography consumers vs. non-consumers) on 5 measures of sexism at the same time. The 5 measures are not normally distributed. Is there a non-parametric version...

09 October 2018 7,657 7 View

How do I deal with uninterpretable values produced by the estimation maximization (EM) function in SPSS?

I collected data through questionnaires (likert scales). Unfortunedly missing values occured. I tried to replace them with the EM inputation function available in SPSS and some of the estimated...

09 October 2018 1,268 1 View

Which inputation method should I use (missing values)?

I am investigating the relationship between pornography consumption and several measures of sexism. Responses were given on likert scales. Since participants were able to leave out questions in...

09 October 2018 6,973 2 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What test should i use in comparing the correlation between categorical and continuous variables?

Dear all, I have the variable (Surgery duration) represented by values in minutes and the variable (preoperative neuropraxia cases) represented as (Yes/No) values. I want to compare these two...

03 March 2021 5,427 5 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

How to find the mean, SD and CI in SPSS?

Hi, I hope that someone can help me with this task: I have 5 groups of participants which are numbered in SPSS from 1 to 5 (according to their group number) and are all under the variable group....

03 March 2021 506 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

How to code open-ended questions in SPSS?

Hello all, In SPSS I am going to code 2 open-ended questions. I have already read all the answers and I made a list of the most important categories to which I can code the answers. This question...

02 March 2021 1,757 4 View

The procedure compute?

02 March 2021 5,204 3 View