The median is 3.5, the average is 4.5, ask 4.0 2.3 6.2 2.8 () 8.7 what are the numbers in brackets

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• 1. The average and variance of data 0.1, 0.2, 0.3, 0.4 and 0.5 are calculated by two methods
• 2. There are 10 data in a group, and the difference between each data and their average is - 2,4,4,5, - 1, - 2,0,2,3, - 5, then the variance of this group of data is - A .0 B.104 C.10.4 D.3.2
• 3. Take 4 / 1,4 / 1,4 / 1,4 / 1 as the weight to calculate the average number of this group of data, and 0.1,0.2,0.3,0.4 as the weight to calculate the average number of this group of data This set of data is 21, 32, 43, 54
• 4. The average of a set of data 2,0, negative 2,1,3 is
• 5. 1, 2, 4, 8, 16, what is the number of 2013? What if it's the nth number? Is it the N-1 power of 2?
• 6. The sum of three numbers is 7 / 12. If one number is 1 / 10 and the other is 1 / 4, find the third number One minute!!! Hurry, hurry, hurry, hurry, hurry, hurry!!!!!!!!!!!!!!!!!!!!!!!!! one
• 7. From 1, 2 How many numbers can be taken out of 2010 positive integers, so that the sum of any three numbers can be divided by 33?
• 8. From 1, 2 How many numbers can be taken out of 2010 positive integers, so that the sum of any three numbers can be divided by 33?
• 9. From 1, 2 How many numbers can be taken out of 2010 positive integers, so that the sum of any three numbers can be divided by 33?
• 10. From 1, 2 How many numbers can be taken out of 2010 positive integers, so that the sum of any three numbers can be divided by 33?
• 11. We know that a group of integers from big to small are: 10, 10, x, 8. Their median is equal to the average. Find the value of X and the median of this group of data
• 12. There are 9 data in a group of data, which are 3, 2.8, 6, 4.5, 2.8, 3.1, 1, 1.9, 3, X respectively, so as to know that the mode of this group of data is 2.8, And if it is unique, then x is equal to
• 13. In the data set of 1.5, 2.8, 3.2, 3.4, 2.9, 3, 3.2, the median is? Mode is?
• 14. Is there mode in data 2.3.4.5.6.7.8.9? Why
• 15. In the data of 1.5, 2.8, 3.2, 3.4, 2., 9, 3, 3.2, the median is () and the mode is () At 1.5, 2.8, 3.2, 3.4, 2., 9, 3, 3.2 In this set of data, the median is () and the mode is ()
• 16. There is a group of data as follows: 30.24.36.18.24.24 the median of this group of data is (), and the mode is ()
• 17. There is a group of numbers: 3, 5, 6, 8, 9, 22, 24. The average of these numbers is______ What's the median______ As can be seen, the median is not affected______ Or______ The influence of data is sometimes used to represent the influence of all data______ More appropriate
• 18. Fill in a number in the brackets below to make the median of this set of data 29? 10.50.18.15.25.34.48
• 19. 19.23.26.29.28.32.34.35.41.33.31.25.27.31.36.37.24.31.29.26.30 what are their median and mode
• 20. 1, 3, 4, 8, 16, 32, (). Please fill in the numbers in brackets This is what I think. It's not difficult. The key depends on your keen observation