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vudangluc
2 năm trước
Bài 3: Trong cuộc tìm hiểu về số tuổi nghề của 100 công nhân ở một công ty có bảng sau : Số tuổi nghề (x) Tần số (n) 4 5 ….. 8 25 30 … 15 = 5,5 N = 100 Do sơ ý người thống kê đã xóa mất một phần bảng . Hãy tìm cách khôi phục lại bảng đó. giúp mình với, mình đang cần gấp :<
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Các câu hỏi liên quan

1. VTV3 is a/an___________ television channel in Viet Nam. A. local B. national C. international 2. A man on a television or radio programme who gives a weather forecast._____________ A. TV Viewer B. newsreader C. weatherman 3.My family enjoys watching game shows __________ they are very exciting and interesting. A. so B. because C. but 4. Hello Fatty is a(n) ________TV cartoon series for kids. A. entertain B. educate C. popular 5. A: ________do you play badminton? B: I play it three times a week. A. How often B. Who C. When 6. We use ____________ to change the channel from the distance. A. TV screen B. remote control C. volume button 7. What’s your ____________TV programme? - It’s cartoons. A. best B. like C. favourite 8. This programme will tell people about life of animals in the world. It’s a/an _________ A. game show B. animal programme C. quiz show 9. Are there any good programmes __________ teenagers on TV tonight? A.to B. of C. for 10. PTQ is a___________ television in Viet Nam. A. national B. local C. national 11. .My friend is a(n )_______ He reads out the reports on a local television. A. newsreader B. comedian C. MC 12. _________the newsreaders on BBC One reads very fast, my brother can hear everything in the news. A.but B. although C. because 13. If you want to know what the weather is like tomorrow, watch the ___________ A. game show B. weather forecast C. music show 14. Disney channel is one of the most popular channels __________ children . A.to B. of C. for 15. Children love Let’s learn because they make ___________fun. A. education B. entertaining C. educate 16. We use ____________ to change the volume on TV. A. TV screen B. remote C. volume button 17. ____________days a week do you go to class? – I go to class five days a week. A. how often B. how many C. When 18. TV __________ can join in some game shows through telephone or by email. A. weathermen B. people C. viewers 19. Find the word which has different sound in the underlined part . A. although B. nothing C. healthy 20. Find the word which has different sound in the underlined part. A. then B. them C. thing

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