Est-il possible de mesurer la relation entre deux variables du point de vue des enseignants (par exemple) en utilisant le coefficient de corrélation de Pearson ?
هل يمكن قياس العلاقة بين متغيرين من وجهة نظر المدرسين (مثلا) باستخدام معامل ارتباط بيرسون؟
Maybe. It depends on what relationship you think those two variables have.
If it's linear, then Pearson correlation. Or maybe linear regression, which will give you more information (such as the slope).
Sal Mangiafico Thank you for your attention to my question. But I think that it's most appropriate to use the K2 test (Chi Square) because I want to find the relationship between dyscalculia and academic delay through the opinion of teachers
What kind of variables are dyscaclulia and delay ? Are they interval, ordinal, or nominal ?
Sal Mangiafico I will not measure these variables directly among the students, but I will measure them through the opinion of their teachers. Therefore, the results of the measurement are frequences, so I think the type of measurement is nominal.
Not really the question. Look up ordinal, nominal, interval/ratio. The answer to this question is the key to what kind of test or measure of association you want to use.
What I really need is to know the other types used to find the relationship between two qualitative variables (Nominal level data) except the Pearson coefficient, which is quantitative, and the Spearman coefficient, which requires ordinal data.
The association of two nominal variables can be expressed with Cramer's V. ( Cramér's V ). The associated test is the chi-square test of association (or, of independence).
But I suspect that your variables are ordinal, or maybe binary.
If they are ordinal, you could still use Cramer's V and a chi-square test. But usually, you want to take into account the ordinal nature of the variables.
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