Mathematics Stack Exchange
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Questions tagged [average]

Averages summarise a set of values in one way or another. Without further qualification it most commonly refers to the arithmetic mean, but other averages such as root-mean-square exist.

In its most general definition, an average is a summary of a set of values. Normally it refers to the arithmetic mean, but other means may be employed (geometric, harmonic, etc.) or a transformation may be applied before and after taking a mean (e.g. root-mean-square).

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One number to represent the percent changes of multiple numbers

Question: Is there a way to represent the total percent change of multiple numbers (make it into one number that represents change) that isn't just the percent change between the first and last number of the set? So I know percent change is…
Liger
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Rate Times Distance Problem with Averages

On your drive to Hoover Dam, you maintain an average speed of 50 miles per hour on the way up. Returning home, you are only able to average 45 miles per hour because of heavy traffic. What is your average speed for the entire round trip?
Star
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Calculating a 5 star rating with a reputation number...

Possible Duplicate: 5 star ratings. Bayesian or Weighted average? Similar question, but unlike that question this deals with two factors the stars and reputation. Lets say Stack Exchange were to have a 5 star rating system instead of up vote and…
Josh Druve
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Finding the average of this problem

There are 100 people in a room. Each one them can eat 4 pies in total. The maximum amount of pies that can be eaten is 400 pies. If 172 pies were eaten, what is the average pie eaten by per person? I have trouble coming up with the correct…
frosty
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Quantitative Aptitude Average

The average weight of a group of boys and girl is $38$ kg. The average weight of boys is $42$ kg and that of girls is $33$ Kg. If the number of boys is 25, then the number of girls is?
Jawed
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The average of 11 results in 50

The average of 11 results in 50.If the average of first six results is 48 and that of last six 51,the sixth result is?
Abhiruchi Sharma
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Advanced average formula

I need some help with a formula for programming use! It's strength training related, so lets say I squat $100kg$ for a max($100\%$) And in one workout perform $80kg$ for a total of $20$ repetitions, thats $80\%$ relative to max. And then I do $70kg$…
Pontus
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