how to calculate an average of percentages?
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Calculate the percentage average: To find the average percentage of the two percentages in this example, you need to first divide the sum of the two percentage numbers by the sum of the two sample sizes. So, 95 divided by 350 equals 0.27. You then multiply this decimal by 100 to get the average percentage.
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The percentage difference between two values is calculated by dividing the absolute value of the difference between two numbers by the average of those two numbers. Multiplying the result by 100 will yield the solution in percent, rather than decimal form.
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['Example: Convert 0.125 to percent. Multiply 0.125 by 100: ... ', 'Example: Convert 0.35 to percent. Move the decimal point two places to the right: 0.35 → 3.5 → 35. ... ', 'Example: Convert 0.985 to percent. ... ', 'Example: Convert 1.2 to percent.']
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To calculate a percentage of a percentage, convert both percentages to fractions of 100, or to decimals, and multiply them. For example, 50% of 40% is: 50100 × 40100 = 0.50 × 0.40 = 0.20 = 20100 = 20%.
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To calculate 25 percent of a number, simply divide it by 4. For example, 25 percent of 12 is 12 divided by 4, or 3. 10 percent means one tenth. To calculate 10 percent of a number, simply divide it by 10 or move the decimal point one place to the left.
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['Correct the paper.', 'Determine the number of total questions.', 'Count the number of questions answered correctly.', 'Take the number of correct answers and divide by the total number of questions. ... ', 'Multiply this number by 100 to turn it into a percentage.']
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To calculate the average, divide the total by the number of readings. If we look at the example above: The total is 765, divided by 5 = 153, which is average A. The total is 406, divided by 5 = 81, which is average B.
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To convert a percentage into a 4.0 grade point average, start by dividing the percentage by 20. Then, just subtract 1 from that number to get the grade point average. For example, if your grade is 89 percent, you would start by dividing 89 by 20, which would give you 4.45.
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Calculate the Total, then Calculate Percentage The first is to divide the denominator of the fraction into the numerator to get a decimal fraction, which is one with a base of 10. You then multiply by 100 to get a percentage.
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['Step 1: The difference is 4 − 6 = −2, but ignore the minus sign: difference=2.', 'Step 2: The average is (4 + 6)/2 = 10/2 = 5.', 'Step 2: Divide: 2/5 = 0.4.', 'Step 3: Convert 0.4 to percentage: 0.4×100 = 40%.']
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How do you work out the percentage of something? To calculate what percentage the number A is of B, you can simply divide A by B and then multiply by 100 or simply move the decimal place to the right twice. So for example the percentage 2 is of 4 is 2/4*100 = 0.5*100 = 50%.
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Calculate Averages Multiply the average for each category by the weight, in decimal, of each category to calculate the final points out of 100. For example, if your test average is 88.2 percent and is weighted 45 percent, the points for your overall grade out of 100 would be 39.69 (which is 88.2 x 0.45).
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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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To find the percentage of a number we divide the total amount by 100 - this will tell us what 1% of the total is, and then multiply by the amount that we wish to know. Another method of finding the percentage of a number is to change the percentage required into a decimal and the multiply the number by it.
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Calculate the average percentage by dividing the total items represented by percentages by the overall total of items. In the example, a total of 200 pencils were removed out of a total of 500 pencils. Divide 200 by 500, which is equal to 0.40. Convert to percentage form by multiplying 0.40 by 100.
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['Subtract the accepted value from the experimental value.', 'Take the absolute value of step 1.', 'Divide that answer by the accepted value.', 'Multiply that answer by 100 and add the % symbol to express the answer as a percentage.']
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['Open Microsoft Excel.', 'Enter the data to be averaged in column A. ... ', 'Enter the corresponding percentages in column B. ... ', 'Enter "=A1*B1" without quotes in cell C1.']