Tagged Questions

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0answers
53 views

How to assess Inter-rater reliability of frequency data with two raters using SPSS?

I am doing an observational study on the frequency (number of times) a particular person enters a shop. This study is being carried out by two different observers. I now want to do an inter-rater ...
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2answers
2k views

What am I supposed to do with negative Cronbach alpha

I have gathered data from 130 questionnaires and I have 30 variables. Cronbach alpha is badly negative and I have Checked every thing I knew. But I saw no change in result. please help me SPSS file ...
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0answers
231 views

Is it necessary to calculate Cronbach’s alpha for each sub-test?

I have a data set that includes two sub-tests, each measured using a Likert scale. I want to test the reliability. Is it necessary to calculate Cronbach’s Alpha for each sub-test? Or do I have to ...
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1answer
754 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 ...
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1answer
458 views

Interrater reliability in SPSS

I am trying to calculate interrater reliability in SPSS for both pre and post test of the same measure that is administered as part of a prison intake program. The measure has 20 items and then a ...
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2answers
3k views

How to compute the standard error of measurement (SEM) from a reliability estimate?

SPSS returns lower and upper bounds for Reliability. While calculating the Standard Error of Measurement, should we use the Lower and Upper bounds or continue using the Reliability estimate. I am ...
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2answers
12k views

AVE & composite reliability with SPSS

I have some issues with an explorative factor analysis. Can anybody please tell me how to calculate the Average Variance Extracted (AVE) and the Composite Reliability from two factors, each with ...
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1answer
6k views

Inter-rater reliability using Intra-class correlation with ratings for multiple objects on multiple properties

Initial Question: I am trying to calculate inter-rater reliability. Previous researchers in this area have used intraclass correlation. SPSS has options for two-way random, mixed random and one-way ...