You first need to understand why the usual method, the average valuation of the product is not suitable for use. Price list of any company involved in the trade, usually several hundred SKUs. It rarely happens that they are the productof the mi-substitutes, competing with each other. This range is ineffective and generally leads to a contraction of demand, rather than expansion and revenue growth. So usually every company tries to occupy a niche in different product groups. It is obvious that to calculate the average cost of goods by dividing the total price by the number of positions is impossible. The resulting number will reflect "the average temperature in the hospital".
Therefore, the more accurate is the calculation of the average arithmetic weighed. It is produced in two stages. To calculate average cost of goods, break the range into groups of homogeneous goods can be compared by price. Within each group determine the average cost of conventional products division of price by quantity. Next, find the proportion of each group in total production volume.
Then, to calculate average cost of goods, multiply the percentage of each group in the total number of products at the appropriate average prices. Thus obtained, the final price will be much more accurately reflect the average cost of the goods. However, even this option may not be suitable, if products is too heterogeneous, for example, food products and industrial goods. In this case it is more correct to calculate average cost of goods for each product.
Advice 2: How to determine the average number
All the known numbers can be mentally laid out in a line, this line is called numerical axis. It is located at the ascending of the mathematical values from minus infinity to plus infinity. And if you choose any two points, it is possible to determine by calculation how many will be between them, that is, to determine their average number.
First, it follows from these two numbers determine the minimum and maximum comparison. Then from the larger value to take less. Example. You need to determine the average value between the numbers 14 and 76. Seventy-six more than fourteen. The difference between these numbers: 76-14=62, is sixty two.
If is the average value between numbers with different modules (positive and negative), then the difference should be found by the rule of subtracting numbers with different signs: from the larger number to take less and put the answer the sign of the larger number. Example: the difference between the numbers -3 and 6 to find how |6-3|=3 and assign the answer to a plus sign.
Then, the obtained difference is divided by the number of integers among which the need to find the average value. Defined in the above example , the average value is between two numbers, then finding the average value should be found to split the difference, equal to sixty-two by two. It turns out, 62/2=31. Answer: the average between the numbers fourteen and sixty-two is the number thirty-one. It is located on the numeric axis exactly between these values.