1. Để điều tra 1 vấn đề nào đó em phải làm những công việc gì? 2. Làm thế nào để đánh giá được những dấu hiệu đó? 3. Để có một hình ảnh cụ thể về dấu hiệu, em cần làm gì? 4. Tần số của một giá trị là gì, có nhận xét gì về tổng các tần số; bảng tả số gồm những cột nào? 5. Để tính số x ta làm như thế nào? 6. Mốt của dấu hiệu là gì? Kí hiệu? 7. Người ta dùng biểu đồ làm gì? 8. Thống kê có ý nghĩa gì trong đời sống? giúp mik với mg ơiiiiiii

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Test for unit 11 I. Use ‘Would/ Do you mind + verb-ing?’ to make these requests more polite. 1. Can you take me a photograph? ……………………………………………………………………………………. 2. Could you wait a moment, please? ……………………………………………………………………………………. 3. Will you turn down the TV, please? ……………………………………………………………………………………. 4. Please make some tea. ……………………………………………………………………………………. 5. Could you lend me some money? ……………………………………………………………………………………. 6. Will you post the letters for me? ……………………………………………………………………………………. 7. Could you open the windows? ……………………………………………………………………………………. II. Use ‘Would/ Do you mind if …?’ to make the following sentences more polite. 1. Can I move the refrigerator to the right corner? =>Would 2. Could I smoke? => Do 3. May I ask you a question? =>Would 4. Could I borrow your bike ? =>Would 5. Can I use your headphone? =>Do 6. Shall I carry your luggage? => Would 7. Could I borrow your newspaper? =>Do 8. Shall I drive? =>Would 9. Shall I sit here? =>Do III. Combine each pair of sentences, using present participle (V-ing) or past participle (V-ed). 1. The boy is Ba. He is reading the book. ……………………………………………………………………………………. 2. The old lamp is five dollars. It’s made in China. ……………………………………………………………………………………. 3. The baby is crying for her mother. She is sitting in an armchair. ……………………………………………………………………………………. 4. The boy was taken to the hospital. He was injured in the accident. ……………………………………………………………………………………. 5. The road is very narrow. It joins the two villages. ……………………………………………………………………………………. 6. Do you know the man? The man is talking to Tom. ……………………………………………………………………………………. 7. The widow has been repaired. It was broken last night. ……………………………………………………………………………………. 8. The taxi broke down. It was taking us to the airport. ……………………………………………………………………………………. 9. A bridge has been declared unsafe. It was built only two years ago. ……………………………………………………………………………………. 10.Most of the good are exported. They are made in this factory. ……………………………………………………………………………………. 11.A new factory has just opened in the town. The factory employs 500 people. ……………………………………………………………………………………. 12.“Romeo and Juliet” is the best tragedy I have ever seen. It was written by Shakespeare. ……………………………………………………………………………………. giải giúp mik với mik đag cần gấp