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Câu 10. Khoảng tin cậy cho một hệ số hồi quy riêng của hàm hồi quy mẫuA. có thể dùng để kiểm định các giả thuyết liên quan đến hệ số hồi quy tương ứng của hàm hồi quy tổng thể.B. có thể dùng để so sánh giá trị giữa các hệ số hồi quy riêng.c. Có được bằng cách cộng trừ Tapha/2 (n-k) vào hệ số hồi quy riêngD. cho phép thấy được tầm quan trọng về mặt ý nghĩa kinh tế của ước lượng

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