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What is the median? I can do simple things, but I can't understand complex things I know the median of 123 is 2, but if there is a frequency, I won't come For example, 1, frequency 10, 2, frequency 20, 3, frequency 30, how to calculate? I know, but there are so many frequencies. There are 60 figures listed. When do you want me to calculate? There's a way,
same
There are 60 numbers in this question, so take the average of the 30th and 31st numbers
1-10 is 1, 11-30 is 2, 31-60 is 3
So the 30th and 31st numbers are 2 and 3, respectively
So the median of this set of data is (2 + 3) / 2 = 2.5
Median calculation
If I tell you that the average of the five numbers is 15 and the median is 18, what is the most likely number among the five numbers? How to calculate?
The sum of the five numbers is: 15 * 5 = 75
Excluding the sum of median: 75 - 18 = 57
Because it's the most demanding
So the rest of nature is the smallest
The other three numbers are 0 1 19
Then the maximum number is 57 - 20 = 37
How to find the median of a group of data with repeated numbers? When the data is arranged by size, is there only one repeated number?
There are several data to be arranged
What are the prime numbers in the numbers 20 to 40
There are four prime numbers from 20 to 40, 23, 29, 31 and 37
Write the following number as the sum of two prime numbers. 40 = () + ()
It's in the fifth grade volume 1, easy 15
40=3+37=11+29=17+23
Write the following number in the form of adding several prime numbers 40 = () + () + () + () 40 = () + () + ()
40 = 18 + 22 = [(7 + 11) or (5 + 13)] + [(5 + 17) / or (3 + 19)] 40 = 16 + 24 = [(5 + 11) or (3 + 13)] + [(5 + 19) or (7 + 17) or (11 + 13)]
In a * b = C, a and B are two different prime numbers, then C has () factors
A.2 B.3 C.4
Yes, please answer,
The factors of C are: 1, a, B, C
C.4
B is a prime number, it has______ The largest factor is______ The smallest factor is______ ．
B is a prime number, it has two factors, the largest factor is B, the smallest factor is 1; so the answer is: 2, B, 1
A prime number has______ A factor, a sum of at least______ Factor
The meaning of prime number and composite number is known: a prime number has 2 factors, and a composite number has at least 3 factors; so the answer is: 2, 3
How many factors does a prime number have?
How many factors are there in a prime number?
There are two factors for prime numbers,
There's only one and it itself
How many factors does a composite number have at least?
There are at least three factors in the sum,
In addition to 1 and itself, there is another factor, such as 4, which has 2 in addition to 1 and 4
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