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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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Adding up numbers * weights to get a result (not weighted average), does it have a meaning?

I have been comparing two solutions and used weights for individual areas based on their importance. I was interested which solution is better, i.e. which one has the higher score. The thing is I simply multiplied each score with individual weight…
Spietro
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Is that possible to get all possible numbers, if I have only an average value, max, min number & also number of numbers?

I tried to find out the all numbers or set of possible combination of numbers. But I have only the averages value, maximum number, minimum number & also have tolal number of numbers. Example: Avg value: 150 Max number: 500 Min number: 33 Total…
SOYON
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Averaging data with different weights, and interpreting the results

I am trying to understand how to average certain data, interpret the result of that, and potentially convert the results to percentages. I have four categories for the data: 1: (0-50%): Not Well 2: (50-75%): Okay 3: (75-90%): Well Done 4:…
ChaosKExtreme
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Better Rating Result instead of Average

In my database, each item has a total_votes and total_ranking. When a user vote, I add +1 to the total votes and add its rating (1 to 5, 5 is the highest) to the total_ranking (total_ranking = total_ranking + user_vote). This is all the data that I…
Liron Harel
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How do I Adjust Dynamic Weighted Averages?

I am trying to create a formula in Excel that tries to create a weighted average score for a person. The only problem is that sometimes one or two of the components of the weighted average may not be relevant for a person. My question is, how do I…
ppadru1
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Maximum and minimum average question

During a cricket match, India playing against NZ scored in the following manner: Partnership | Runs scored $1$st wicket$~~$ | $112$ $2$nd wicket | $58$ $3$rd wicket$~$ | $72$ $4$th wicket$~$ | $9$ $5$th wicket$~$ | $46$ $6$th wicket$~$ | $23$ So…
mac07
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problem in understanding overall change in average

The average weight of 5 men is decreased by 3kg when one of them weighing 150kg is replaced by another person. This new person is again replaced by another person whose weight is 30 kg lower than the person he replaced. What is the overall change in…
mac07
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In data compression this equation describes the 'average length' of the code. Can someone please explain?

$$\bar{l}(\mathcal{P},\mathcal{L}) = \sum_{j=1}^n p_j l_j$$ I have just started studying this module and it describes the equation as the the average length of the code. Can you please break down what each part of the equation means?
Usman
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Average speed question of a car on an oval track

On an oval track, a car averages $30$ M.P.H. (miles per hour) for the first lap (a lap is $1$ mile around the track). At what average speed must that same car drive the 2nd lap on that same track so that the average speed of both laps is $60$…
David
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How do i find weighted normal vector?

How do I find the weighted average of a normal vector. Heres a phrase from my book a weighted average might be used where the weights are determined by the areas of the polygons (e.g., polygons with larger areas have more weight than polygons with…
terry
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Calculate the average as numbers arrive

So, suppose you have to calculate the average of a set of numbers, but you don't know the whole set yet. Someone is providing you one number after the other and you cannot use more than the current number and the next number in order to calculate…
user141170
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Fair distribution

I have an user, who received one score in 3 different things for example in A, B and C. I want to get what average score received user for each thing. 1/3 = 0.33 so, this is fair distribution, but 0.33+0.33+0.33 is not 1. May be give to A 0.34…
Oto Shavadze
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Calculate the average grade Leslie must make in order to receive a B for the math class?

Leslie is taking a math class. This is how the class is graded. Test 1 13% Test 2 13% Test 3 13% Lab 1 10% Lab 2 10% Lab 3 10% Lab 4 10% Final Exam 21% She received a 93% on Lab 1, 70% on Test 1, 29% on Lab 2, and 50% on Test 2 What…
simplylizzy
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What exactly does the Geometric Mean actually mean ? When should I use it?

I am working signal demodulation and the RC value requires to be the geometric mean of the periods of the message signal and the carrier wave. I wonder why I need the geometric mean for this or why in general or under what circumstances do people…
Adi
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Calculating Average.....

I know its simple problem, but i want to know if it can be solved some other way around.Here goes the problem. Input: 234 , 54678 , 34987 Problem is to calculate how many of the numbers(by number i mean the comma separated number not single digit)…
Jay
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