How many numbers do you enter to find the average of the maximum and minimum values?

If the data is normally distributed (or approximately normal), according to the 997 rule, almost all the data is within 3 standard deviations around the mean, that is, the maximum and minimum values can be roughly judged by the mean 3 standard deviations.

Mathematical concepts

Average, a statistical term, is the amount of trend in a set of data, which is the sum of all the data in a set of data divided by the number of pieces of data in that group. It is a metric that reflects trends in a data set.

Standard deviation is the arithmetic square root of the arithmetic mean (i.e., variance) from the square of the mean deviation, which is expressed by , and the standard deviation is the arithmetic square root of the variance, and the standard deviation can reflect the degree of dispersion of a data set.

The minimum definition is the global (or absolute) minimum point, then the value of the function at the maximum point is called the maximum value of the function, and the value of the function at the minimum point is called the minimum value of the function.

Knowing the mean, standard deviation, and total number of data, find the maximum and minimum values of this set of data: according to Chebyshev's inequality: p<=s a 2=40%, find a, as: (,

If there are only 2 samples, then it is possible to solve these 2 samples by using the formula of mean and variance, each formula as an equation, and forming a system of binary equations. But if there are more than 2 samples, even if there are only 3 of them, because the mean and variance are 2 equations, which are smaller than the unknown number (the number of samples), there will be an infinite number of solutions, and the maximum and minimum values cannot be found.

The nature and application of standard deviation.

Standard deviation is most commonly used in probability statistics as a measure of statistical dispersion. Standard deviation is defined as the square root of the arithmetic mean of the square of the deviation of the standard values of each unit of the population from its mean.

It reflects the degree of dispersion between individuals within the group. In principle, the results measured to the degree of distribution have two properties: they are non-negative values and have the same units as the measured data.

There is a difference between the standard deviation of a total or a random variable and the standard deviation of the number of samples in a subset.

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Find the maximum, minimum, and average value of any of the 5 numbers you entered, and find out how many of them exceed the average, as follows, assuming that the 5 numbers you enter are x1, x2, x3, x4, x5. where the maximum value is max(x1,x2,x3,x4,x5); The minimum value is min(x1,x2,x3,x4,x5); The average is (x1 x2 x3 x4 x5) 5. If you want to count how many numbers exceed the average, you can first compare the size of x1, x2, x3, x4, x5 and the average value, and then count how many numbers are larger than the average value, and then you can know how many numbers exceed the average.

Find the maximum, minimum, and average value of any of the 5 entered numbers, and find out how many numbers exceed the average.

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Find the maximum, minimum, and average value of any of the 5 numbers entered, and find out how many numbers exceed the average, as follows: Let's assume that the 5 numbers you enter are x1, x2, x3, x4, x5. where the maximum value is max(x1,x2,x3,x4,x5); The minimum value is min(x1,x2,x3,x4,x5); The average is (x1 x2 x3 x4 x5) 5. If you want to count how many numbers exceed the average, you can first compare the number of large and small eggplants with the average value of x1, x2, x3, x4, x5 respectively, and then count the number of numbers that are larger than the average, and then you can know how many numbers exceed the average value of the average value.

It is known that the function y=2x 3 -3x 4 +6x 5 -4x+50, from x=0 to x=2, calculates the value of y every Li Lingque interval; Enter a positive integer n, which is the first to sort the value of y from the small Wang key to the first n terms and the last n terms of the large output (if 5 is entered, the first 5 terms and the last 5 terms are output, that is, the smallest 5 y values and the largest 5 y values).

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It is known that the function y=2x 3 -3x 4 +6x 5 -4x+50, from x=0 to x=2, calculates the value of y every interval; Enter a positive integer n, sort the values of potato y, and output the first n terms and the last n terms from small to large (if 5 is entered, the first 5 terms and the last 5 terms are output, that is, the smallest 5 y values and the largest 5 y values). The answer is as follows: from x=0 to x=2, calculate the value of y every other time, and the answer is:

Input a positive integer n, the value of y is sorted from small to large and output the first n terms and the last n terms, such as input 5, then output the first 5 terms and the last 5 terms, that is, the smallest 5 y values and the largest 5 y values, and the answer obtained is: the smallest 5 y values of the starting car:

The only 5 y-values next to the largest number are: ,

In general, this is not allowed, except for some special occasions when the number is equal to 3.

For example, the maximum value is 5, the average.

If it is 4 and the number of state blights is also 4, there are many possibilities for the sample dataAs shown above, the minimum value for this example can be either 2 or 1.

Therefore, according to the title, it is not possible to determine the minimum value of the book.

The meaning of finding the average number can be seen from the fact that in a set of data, the average of the balance is smaller than the largest number and larger than the smallest number

So the answer is: small, big