Middle 2 median exercises, 2 middle math median questions?

You might as well buy an exercise book

Sort by high and low first, and then take the middle value.

So the order is

The median value is 8 for a finite set of numbers, which can be observed by putting all the valuesAfter sorting high and lowFind outRight in the middleas the median. If there is an even number of observations, the average of the two middle values is usually taken as the median.

When you don't understand, it's good to look at the definition of the concept.

The median should be arranged from smallest to largest, and then the median.

If the total is odd, take the middle number as the median, and if the total is even, take the average of the middle two digits as the median.

This question examines the understanding of the median, according to the large to small or from small to large, take the middle number, the even number is the middle two to find the average, the 7 numbers in the question, according to the order from large to small: 10 9 9 8 8 8, then the middle number is 8, so it is not.

The pictures in the question are arranged according to the date, which is to induce you, and you have to review the questions clearly!

Organize the data from lowest to highest, and then find the middle number. (e.g. the middle number is 3).

If there are two numbers in the middle (like the middle number is not unique, there are two numbers), find the average of the two numbers and the median is .

The median is not the same as the mean.

By definition, the median is the value of the middle number of the numbers ranked from smallest to largest, or the average of the middle two numbers.

There are 7 numbers here, and the middle number is the 4th number, which is 8

Here's what it looks like when you put the five digits in line.

27 and the median is 21

And it's a total of six digits.

So the median point is 20 and half of the sum of the nearest number (20+x) 2=21

x=22

Solution: Discussed in the following three situations:

The median is (18+20) 2, which is 19.

The median is (20+x) 2, and the x-calculable is 22 because (20+x) 2=21

So x=22

The median was (20+23) 2=

Off topic. So the value of x is 22

It has 6 numbers, so (6+1) 2=

Then sort 12, 18, 20, 23, 27Since the median is 21, x is between 20 and 23 and is in.

position, that must be 22

The median doesn't need to be calculated, just counted.

But if you are afraid of trouble, you can simply calculate it.

Calculate the total number of people.

1*5+3+6=25 (person).

25 2 12 (person).

So the median is the income of the 13th person with a monthly income from small to large (or large to small).

This question is more convenient from small to large numbers, and it is 3400

In fact, the specific method is also given on the map, but it is better to use the number if it is really not good.