رد: سؤال احصاء
وايش يعني دي الجمل
• The range of rs = [-1 , 1] or -1 ≤ rs ≤ 1
• d = zero if both sets of data have the same ranks rs = 1.
• If the sets of data are ranked in the opposite way rs = -1.
• If there is no relationship between the two variables rs = 0.
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