how to calculate the weighted average?
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The formula for finding the weighted average is the sum of all the variables multiplied by its weight, then divided by the sum of the weights. Example: Sum of variables(weight)/sum of all weights = weighted average.
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When using the weighted average method, you divide the cost of goods available for sale by the number of units available for sale, which yields the weighted-average cost per unit. In this calculation, the cost of goods available for sale is the sum of beginning inventory and net purchases.
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The investor can calculate a weighted average of the share price paid for the shares. In order to do so, multiply the number of shares acquired at each price by that price, add those values and then divide the total value by the total number of shares.
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To calculate the average age of death, you must calculate a weighted average (illustrated below). To do so, multiply each individual median by the appropriate number of deaths (e.g.. 2 x 386 = 772, 7 x 98 = 686, etc.). Add the total results together (16244.5) and divide by the total number of deaths (955).
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['Calculate the mean (simple average of the numbers).', 'For each number: subtract the mean. ... ', 'Add up all of the squared results.', 'Divide this sum by one less than the number of data points (N - 1).']
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['Work out the Mean (the simple average of the numbers)', 'Then for each number: subtract the Mean and square the result (the squared difference).', 'Then work out the average of those squared differences. (Why Square?)']
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To get a weighted average for a regular pay rate, add the earnings from each job together and then divide the amount by the total number of hours -- including any overtime -- worked for all jobs.
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How to Calculate Average. The average of a set of numbers is simply the sum of the numbers divided by the total number of values in the set. For example, suppose we want the average of 24 , 55 , 17 , 87 and 100 . Simply find the sum of the numbers: 24 + 55 + 17 + 87 + 100 = 283 and divide by 5 to get 56.6 .
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['Find the mean of the set of data.', 'Subtract each number from the mean.', 'Square the result.', 'Add the results together.']
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Calculating Weighted Average in Excel – SUM Function While SUMPRODUCT function is the best way to calculate the weighted average in Excel, you can also use the SUM function. To calculate the weighted average using the SUM function, you need to multiply each element, with its assigned importance in percentage.
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To calculate a weighted average with percentages, each category value must first be multiplied by its percentage. Then all of these new values must be added together. In this example, we must multiply the student's average on all tests (83) by the % that the tests are worth towards the final grade (40%).
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To get the Weighted Average, you divide by the Total of the weights. If we had just averaged the Test scores, the value would be 75.5, a significant difference. For more information about the SUMPRODUCT and SUM functions, see the course summary. Now, you have a good idea about how to average numbers in Excel.
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['F = Final exam grade.', 'G = Grade you want for the class.', 'w = Weight of the final exam, divided by 100 (put weight in decimal form vs. percentage form)', 'C = Your current grade.']
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Calculate the Weighted Average Contribution Margin To calculate the WACM, all you need to do is add the unit sales for each product line into one large total. Multiply the contribution margin per unit for each product by the number of sales, and then add the totals.
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Then using a calculator the overall grade is calculated as: Overall grade = (93×10%+ 85×20%+ 86×20%+87×25%+ 91×25%)/100% = 88 percent. In the scenario of before final exam, the average grade is: Weighted grade = (93×10%+ 85×20%+ 86×20%+87×25%)/(10%+ 20%+ 20%+ 25%) = 87 percent.
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['Multiply the numbers in your data set by the weights.', 'Add the numbers in Step 1 up. Set this number aside for a moment.', 'Add up all of the weights.', 'Divide the numbers you found in Step 2 by the number you found in Step 3.']
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Summary: To calculate the weighted average interest rate of all your loans, multiply each loan amount by its interest rate. Add the results together, then divide that number by the sum of all your loan balances.