Chemseddine Tidjani

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Questions related from Chemseddine Tidjani

What does a negative Alpha cronbach in group of items mean ?

In my questionnaire analysis i have found a negative Alpha cronbach in one of the items group, where the others have a positive one. More clearly, i have 04 groups of items that reflect a 0.876...

04 April 2015 831 14 View

Are we obliged to re-test the reliability & validity of a previous questionnaire that has been tested before ?

The use of a previous questionnaire as a measurement tool that has taken the reliability & validity test; does it need to be re-validated? Otherwise, you can check more about the use of a...

03 March 2015 966 3 View

Witch techniques & methods that accure our mistakes on a questionnaire that has been distributed & answered ?!!

Can we correct our mistakes that may appear after the distribution & collection of the answers, even we have undertaken the pre-test of the questionnaire before all that ?!!

08 August 2014 3,303 2 View

How can I treat the non-response questionnaires?

Can we extract the answered questions from each one? If one of the question that may answered by the respondent, may consider as his opinion in that only a question? Witch statistic basics prove...

08 August 2014 6,766 3 View

What did you think of studies about ICT & their influences on Cash management in the case of economic Algerian corporates & companies?

Is it interesting? As an example: " Measuring the impact of ICT use on cash management in economic companies ".

06 June 2013 5,998 0 View