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Câu 67: Nhận định nào sau đây là đúng về đường hồi quy tổng thể?A. Có vô số đường ứng với mỗi tổng thểB. Có thể đi qua hoặc không đi qua gốc tọa độC. Là đường có tổng bình phương các phần dư đạt cực tiểuD. Luôn đi qua trung bình mẫu
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