If a group of data is arranged from large to small, when the number of data is odd, the median is [], when the number of data is even, the median is []

If a group of data is arranged from large to small, when the number of data is odd, the median is [the middle number], when the number of data is even, the median is [the average of the two middle numbers]

What is the median

1. Definition: a group of data is arranged from small to large (or from large to small) in order, and a number in the middle (or the average of the two most middle data, note: different from mode, 2. The advantages and disadvantages of median: median is the bisector of the frequency of sample data, which is not affected by a few extreme values. Sometimes it is more appropriate to use it to represent the general level of the whole data. 3. In the frequency distribution histogram, the area of the histogram on the left and right of median should be equal, 4. The median can also be expressed as the 50th percentile, the two are equivalent. 5. Visual impression Description: half is smaller than "I", half is larger than "I"
The algorithm for editing the median of this paragraph
To find the median, we must first sort the data (from small to large), and then calculate the serial number of the median, which is divided into odd number and even number. The calculation of the median can avoid extreme data, which represents the medium situation of the data as a whole. If the total number is odd, we should follow the order from small to large, Take the number in the middle. If the total number is even, take the average of the two numbers from small to large (e.g.: 2, 3, 4, 5, 6, 7 median: (4 + 5) / 2 = 4.5). When the price rises, properly raising the pension standard of enterprise retirees and the wages of in-service employees will help to protect their basic life, However, it's not easy to provide an average. An average will cover up many problems. Not long ago, netizens wrote a doggerel like this: "there's a Zhang million in Zhang village, and there are nine poor people next door. On average, everyone is Zhang million." for such a problem, it's not the fault of the average, It's not the fault of statistics. There is a ready-made solution in statistics, which is to calculate the "median". The so-called "median" takes an enterprise with 51 employees as an example, ranking the annual income of all employees from large to small, with the one in the middle, That is, the 26th annual income is the median of the enterprise's annual income. In the doggerel, "Zhangcun" personal property median is "zero". At this time, the problem that the average can not explain, the median is clear. Note: it is from small to large, or from large to small, not randomly arranged. The median is the middle level of a group of data
Edit the example of this paragraph
The first group of numbers: the median of 1, 2, 3, 6 and 7 is 3. Principle: if the total number is odd, take the middle number from small to large. The second group of numbers: the median of 1, 2, 3 and 5 is 2.5, Take the average of the two numbers in the middle. (2 + 3) / 2 = 2.5 group 3: the median of 1, 100, 101, 10000 is 100.5 note: there is no absolute relationship between the median and the size of the value. The median is the number in the middle after the number in a column is arranged from small to large! If the number in that column is even, take the average of the two numbers in the middle!

What is the median
I'm in a hurry
fast

If the total number is odd, take the middle number in the order from small to large. If the total number is even, follow the order from small to large

The multiple of a number must be greater than its factor. 2. The product of two prime numbers must be a composite number
3. One fifth of a meter is equal to four fifths of a meter
The greatest common factor and the least common multiple of 4.18 are equal
5.1-two fifths + three fifths = 1-1 = 0 ()
False score must be greater than (). A. greater than 1. B. less than 1. C. greater than 1 or equal to 1
2. Among all prime numbers within 10, there are () prime numbers after adding 2
A.2 B.3 C.4
3. A simplest fraction, the numerator is expanded to twice of the original, the denominator is reduced to half of the original, and the value of this fraction (). A. is expanded to four times of the original, B. is reduced to one fourth of the original, C. remains unchanged
(determinant)
1. It took Xiao Ping half an hour to do her Chinese homework, and (1) how many hours did Xiao Ping spend doing her math homework?
(2) How many hours did Xiao Ping spend doing these two kinds of homework?
2. Car a can travel 20 kilometers in 28 minutes and car B can travel 25 kilometers in 40 minutes. Which car is faster in terms of speed per minute?
3. Xiaoliang has read 60 pages of a science and technology book, but there are still 40 pages left. (1) what percentage of the total pages of the book do you read? (2) what percentage of the total pages of the book do you not read?
4. There are more than 70 new Beihai duck eggs in Xingxing supermarket. If they are put into 4 egg trays in a row, they are just finished. If they are put into 6 egg trays in a row, they are just finished. How many new Beihai duck eggs have been put into Xingxing supermarket?

The multiple of a number must be greater than its factor. (wrong) the product of two prime numbers must be a composite number. (right) one fifth of 3 and 4 meters is equal to four fifths of 1 meter. (right) the maximum factor and the minimum multiple of 4.18 are equal. (right) 5.1-two fifths + three fifths = 1-1 = 0 (wrong)

(4) Among the factors of 36, the even number has (), the prime number has (), and the combined number has ()

Even numbers have 2,4,6,12,18,36, prime numbers have 1,2,3, combined numbers have 4,6,9,12,18,36

At 1 × There are several primes in all the factors of the product of x 30

The answer is a prime number from 1 to 30
2、3、5、7、11、13、17、19、23、29
There are 10 primes in total

Among all the factors of 30, there are several pairs of mutual primes

If a prime number is represented by a, then its factor is ()

1 and a

A is a prime number, so how many factors does it have, and what are the factors

Two, one and a

Triangle plus circle = 300, triangle = 4 circles added, how many are triangle and circle?

According to the known conditions, if five triangles are equal to 300, then the triangle is equal to 60 and the circle is equal to 240
Hope to adopt

If a group of data is arranged from large to small, when the number of data is odd, the median is [], when the number of data is even, the median is []