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  1. shannahw

    Best book - Combination of statistics & SPSS?

    Hi all, I was wondering if you know a good book which can help in building up statistical knowledge in combination of working in SPSS? I am using Field, but I don't like the book that much. I think it is a little messy sometimes and when I want to do an analysis, I need to go back and forward...
  2. shannahw

    Critical n in order to reliably replace missing data with series mean?

    I am looking for a good source that I can use as argument to replace missing data reliably with the series mean. I have a dataset (n=118) from which three datapoints are missing. 2 datapoints are missing within Variable X and 1 datapoint is missing within Variable Y. 2 datapoints are missing...
  3. shannahw

    Mediation - Mediation and b path not significant, can I conclude that there is no relationship between the mediator and the dependent var?

    Hi all, I have conducted a mediation analysis with Hayes PROCESS model 4. The overall mediation was not significant. Now, I am wondering the following: If the mediation and the b path within the mediation are not significant, can I conclude that there is no relationship between the mediator...
  4. shannahw

    Normally distributed errors assumption is violated (multiple regression)

    Hi guys, I am testing the normally distributed errors assumptions for multiple regression with a visual inspection using a P-Plot plot. Now, I have the suspicion that the errors are not normally distributed (see image below). I have two questions about this: Is there any way to test this...
  5. shannahw

    Combining mediation and moderation in linear model (SPSS, PROCESS)

    I want to perform a mediation analysis, but also include a moderator in the relation between the independent variable and the mediator (see conceptual model as attachment). I have been following the steps of Field to do a mediation in SPSS (Hayes PROCESS tool), but now I am stuck, because I am...
  6. shannahw

    Use OR conditional statement using the MISSING function (SPSS)

    I want to use an OR conditional statement using the MISSING function in SPSS (see below), but it doesn't work like this. Anyone knows how I can code this correctly? COMPUTE inclOndrzGeweig=1. IF (MISSING(geslacht | Leeftijd | RSES1_T0 | RSES2_T0 | RSES3_T0 | RSES4_T0 | RSES5_T0 | RSES6_T0 |...
  7. shannahw

    Repeated-measures ANCOVA - Handle assumptions and missing data (SPSS)

    Hi all, I am performing a repeated-measures ANCOVA in SPSS with following characteristics: Dependent variable: weight loss (with three points in time) Independent variable: conscientiousness Covariates: gender, age, depression I can't find a good online guide that will take me step by step...