標題:
F.3 Maths
發問:
1.The manager of a sports shoes company wants to find out the most popular type of shies.Which of the following ststistics in the sales of shies is suitable for the manager? A. mean B. mode C. median D. range2.The mean of 10... 顯示更多 1.The manager of a sports shoes company wants to find out the most popular type of shies.Which of the following ststistics in the sales of shies is suitable for the manager? A. mean B. mode C. median D. range 2.The mean of 10 data is calculated to be 48.7,with a datum 45 wrongly entered as 55.What is the correct mean of the 10 data? A. 38.7 B. 43.7 C. 47.7 D. 49.7 3.If the mean,mode and median of two sets of data are the same,which of the following are true? I. All the data in both sets are the same. II. Two sets of data contain the same number of data. III. Both frequency curves of the two sets of data are symmetric. A. I only B. II and III only C. III only D. none of them 4.The median of 10 numbers is x.If 3 is added to each datum,what is the new median? A. x-3 B. x C. x+1 D. x+3 5.Find the mean,mide and median of the following data. (a) -2, 1 , 1 , 3 , 5 , 8 ,12 (b) 2 , 2 , 2 , 3 , 3 , 6 (c) 1 , 1 , 1 , 1 ,2 , 2 , 3 , 3, 4 , 4 ,4 ,4 , 4, 5 , 8 , 8 , 13 6.Data:2 , 3 , 5 , 5 ,a , b , 9 , 9 , 10 , 12 The above data are arranged in ascending order.If the median and mode are 8 and 9 respectively,find the values of a and b. 7.Data: 7 , 5 , 4 , 9 , 3 , 4 , 5 , 7 , 6 , 4 , 8 , 5 , 1 , 2 (a) For the above set of data. mean= (i) ; mode= (ii) ; median= (iii) (b)Multiple each datum by 2 and then add the result by 3.Find the new values of mean,mode and median. mean = (iv) ; mode= (iiv) ; median= (iiiv) 8.There is a mistake in the following calculation.Correct the mistake. Data: 13 , 21 , 5 , 4 , 18 , 33 , 17 , 6 , 4 Median= the 5th data =18 更新: You don't want to answer my question.Then just shut up!! Don't like a bitch!!!!!Do you think you have the qualification to criticism other people?? Also,i don't want to copy the answer.If i want to copy the answer ,i won't asking you(cs_hc_sc_spcp)!!!!! 更新 2: 無用鬼 and 社會敗類,i think this two adjectives are more suitable for you!!!
最佳解答:
1.The manager of a sports shoes company wants to find out the most popular type of shoes. Which of the following statistics in the sales of shoes is suitable for the manager? A. mean B. mode C. median D. range 2.The mean of 10 data is calculated to be 48.7,with a datum 45 wrongly entered as 55.What is the correct mean of the 10 data? [48.7x10-55+45]/10 A. 38.7 B. 43.7 C. 47.7 D. 49.7 3.If the mean,mode and median of two sets of data are the same,which of the following are true? I. All the data in both sets are the same. II. Two sets of data contain the same number of data. III. Both frequency curves of the two sets of data are symmetric. A. I only B. II and III only C. III only D. none of them 4.The median of 10 numbers is x.If 3 is added to each datum,what is the new median? A. x-3 B. x C. x+1 D. x+3 5.Find the mean, mode and median of the following data. (a) -2, 1 , 1 , 3 , 5 , 8 ,12 [4, 1, 3] (b) 2 , 2 , 2 , 3 , 3 , 6 [3, 2, 2.5] (c) 1 , 1 , 1 , 1 ,2 , 2 , 3 , 3, 4 , 4 ,4 ,4 , 4, 5 , 8 , 8 , 13 [4, 4, 4] 6.Data:2 , 3 , 5 , 5 ,a , b , 9 , 9 , 10 , 12 The above data are arranged in ascending order.If the median and mode are 8 and 9 respectively,find the values of a and b. [b = 9, a = 8x2-9 = 7] 7.Data: 7 , 5 , 4 , 9 , 3 , 4 , 5 , 7 , 6 , 4 , 8 , 5 , 1 , 2 =>1, 2, 3, 4, 4, 4, 5, 5, 5, 6, 7, 7, 8, 9 (a) For the above set of data. mean= (i) 5 ; mode= (ii) 4 and 5 ; median= (iii) 5 =>5, 7, 9, 11, 11, 11, 13, 13, 13, 15, 17, 17, 19, 21 (b)Multiple each datum by 2 and then add the result by 3.Find the new values of mean,mode and median. mean = (iv) 13 ; mode= (v) 11 & 13; median= (vi) 13 8.There is a mistake in the following calculation.Correct the mistake. Data: 13 , 21 , 5 , 4 , 18 , 33 , 17 , 6 , 4 [new data order : 4, 4, 5, 6, 13, 17, 18, 21, 33] Median= the 5th data of new data order = 13
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