How to estimate a reliability of a scale with items rated on dichotomous values (i.e, Yes, No)?
For binary data you may try Kuder-Richardson Formula 20. See links below.
http://www.statisticshowto.com/kuder-richardson/
https://www.youtube.com/watch?v=CRIK_tfUzl0
https://www.statmodel.com/download/RDASEM.pdf
https://www.researchgate.net/post/How_do_I_compute_the_internal_consistency_of_a_scale_which_is_made_up_of_binary_coded_yes1_no0_answers
Thanks so much dear Alaa. Hoping you always the best.
Merci pour tous ces articles, c'est vraiment important
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