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Range and Mid-range http://www.khanacademy.org/video/range-and-mid-range ---------------------------------- يتناول هذا الفيديو حل مسألة لحساب المدى ومتوسط المدى ------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org