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My answer comes with the disclaimer that I am in no way an expert, but here goes:

To the simple question, "Can you average percentages," the answer is, yes. But it is important to note, that the average of percentages is not necessarily meaningful. An example here would be helpful, so I am borrowing from this message board http://www.urch.com/forums/gre-math/95834-rezbipul-sum-average-percentage.html.

The example they provide is:

On two of his tests, Harry scored 30 out of a maximum of 50 and on the third he scored 40 out of a maximum of 100? What is his average percentage score on the three tests?

(a) 33.33%

(b) 40%

(c) 50%

(d) 53.3%

(e) 66.66%

So, specifically answering "what is is average percentage score," the answer would be D, 53.3 percent ((.6+.6+.4)/3). I say this is not meaningful, because to get his final percentage score for the class, you would have to use weighted averages. Add up his actual scores, and divide by the total possible points. (30+30+40)/(50+50+100). His final percentage for the class would be 50%, not 53.3%.

Put another way, by Harry scoring 30 out of 50 on two tests, it would be as if he scored 60/100 on one test. Compare this to his 40/100 on the other test, and you get 100/200, or 50%.

I hope this answered your question.

Addition:

The above answer is true, but is not very well explained. What the poster is trying to say is that it is POSSIBLE to average percentages but it is almost never (actually, practically always) not what you want to do. (i.e. don't do it. ever.)

Imagine there are 5000 people in a parade in Minnesota and 20 in Pennsylvania. You know that 2500 out of those 5000 Minnesotans are female, but the 20 Pennsylvanians in the other parade are all male. You want to find out the percentage of females amongst the two parades.

If you average the two percentages:

((2500/5000)+(0/20))/2 = .25

You find that only 25 percent of participants in the two parades are female. But wait, that doesn't make sense- and here's why:

Percentages work on a scale of 0 to 100- they will give no heed to the fact that there are 4980 more people in Minnesota's parade than in Pennsylvania's. From a percentage standpoint, there are 100 things in each.

To solve this and get a good answer, you add up the total amount of females and divide by the total amount of people:

((2500+0)/(20+5000))= .498

Now you can see that there is the logical just-below-one-half answer. This makes sense because there are 2500 females in 5020 people. See what I mean? An average of percentages almost always yields unwanted answers. There are exceptions, but to stay away from causing confusing I will not go into them.

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Q: Can you average percentages

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Add the 2 percentages together, then divide by 2.

They are called sums of percentages!

percentages are used to tell the over all number

Fractions are integers divided by integers. Percentages are the number of hundredths.

Most people work with percentages in one way or another.

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Yes add the 4 percentages together then divide them by 4 to obtain the average percentage

Add the 2 percentages together, then divide by 2.

Two examples to find the average of percentages: (45% + 34%) / 2 = 39.5 (23% + 26% + 45% + 24%) / 4 = 29.5

It is the arithmetic average of a number of percentages.

Same as any average sums just add and divide it by the amount of numbers you got.

Add the total of the percentages toegether then divide it by the number of results.

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Add them together and divide by 4 (the number of percentages you had in the first place) It's just like averaging plain numbers

10.115%. To find the average, add the 2 individual percentages together, then divide the sum by the number of original percentages in the equation. 7.98% + 12.25% = 20.23% 20.23% divided by 2 = 10.115%

Percentages are percentages - simple! The marketing people have not yet come up with "new improved" percentages.

The formula to calculate the average of percentage: (Percentage 1 + Percentage 2 + ... + Percentage n) / n Percentage 1, Percentage 2, ..., Percentage n are the individual percentages n is the number of percentages For example, if you have the following percentages: 30% 25% 15% The average percentage would be calculated as follows: (30% + 25% + 15%) / 3 = 25%

38.6 on average male actors 51.7 on average women actors others ad lib because of comedy and unrealsitic shows. If we didn't have so many, the percentages would be higher. i don't know the exact number of those percentages

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