The arithmetic averages are the average number of a certain number of numbers obtained by simple calculation. This value is widely used by experts in the field of statistics, economics and other related sciences. Each may consider it, often without the help of computing equipment. Consider several examples.
How to find the arithmetic arithmetic two numbers
Calculate the arithmetic average of two numbers in this way:
- fold two numbers;
- the resulting amount is divided into two.
Use the formula: "(a + b) / 2",
where a, b is the specified numbers to find the average arithmetic.
How to find the arithmetic average of three numbers
Calculation of the average arithmetic three numbers:
- fold three numbers;
- the amount of the three numbers are divided into three.
Use the formula "(A + B + C) / 3",
where A, B, C - the specified numbers for finding the average arithmetic.
How to find a middle arithmetic four numbers
Similarly, the arithmetic average of four numbers is calculated:
- fold four numbers;
- the result is divided into four.
Use the formula: "(A + B + C + D) / 4",
where A, B, C, D is the specified numbers to find the average arithmetic.
How to find the arithmetic average of five numbers
Perform the same algorithm of finding as in previous calculations:
- summarize five numbers;
- divide the result is divided by five.
Use the formula: "(A + B + C + D + E) / 5",
de A, B, C, D, E - the specified numbers for finding the average arithmetic.
General formulation of finding a medium arithmetic number of numbers
The number of numbers from which it is necessary to extract the average arithmetic value may be quite large. Therefore, calculate the result by a single logical principle:
- consider the number of numbers given;
- summarize all numbers;
- the resulting amount is divided into their number.
Now you know that the arithmetic average of the arithmetic numbers is very simple. But be careful and not be lazy to check the result, because even the most simple calculations easily allow a rough error.
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