# Tagged Questions

Average most often refers to the arithmetic mean, but more generally to measures of central tendency that use most, or all, of the data values. Examples include trimmed mean, Winsorized mean, harmonic mean and geometric mean.

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### Arithmetic vs Geometric mean for absolute error of a rate [duplicate]

What is the most appropriate average to use if I want to compute the average of the absolute error of a rate? Example: This sounds a bit complicated, so let me break it down. Suppose I have a box ...
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### Spearman Correlation from 'two-ways' [closed]

I have two data sets where I am comparing where an object in the first data set, ranks in the second data set and vice versa. This leads to the assumption that the data set being compared against is ...
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### What do attendance figures tell me about regularity? What does the average tell me about individual attendance?

Suppose I have a group of $N$ people, attending a series of $M$ events, and (for simplicity) let's assume the overall attendance happens to be the same at each event, say $A$ people (ranging between 1 ...
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### Proper way of averaging histograms

How does one go about averaging multiple histograms of a quantity $x,$ if the individual histograms do not have the same range, that is, $R_i=\text{max}(x_i)-\text{min}(x_i)$ will be different for two ...
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### Averaging correlation coefficients

I am calculating Spearman correlations multiple times between individual data vectors that are not necessarily of the same length. So for example, ...
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### How to cancel out the effect of a voter voting again?

I couldn't come up with a better title but here is the problem I have: in a voting system members are allowed to rank a subject as many as they want. The final rank will be calculate based on the ...
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### Poisson Modeling ANOVA

I'm looking to model percent change in transaction year over year for sales people grouped in certain categories (7 categories total). The percent change in transactions would be Q1 of the current ...
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### Weighted mean / average where you reward the lowest value / cost / distance

Best I've several weather-station (200), placed across the country (508 municipalities). Now, I would like to prescribe the weather info, e.g. temperature, to each of the municipalities of that ...
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### Combining the results of 4 fits performed on 4 different dataset

I have 4 dataset which are independent measurement of the same physical quantity. I have fitted each dataset with a certain model, as a result of the fit I estimated one parameter with its uncertaity (...
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### How to get a mean from multiple categorical fields

I have some census data on income I would love to analyze. But income, in the data, is split into different income groups, each group is a column containing the number of people in an area that earns ...
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### Calculate sentiment and compare it to other variables

Everyday I receive a data of three variables (neutral, negative and positive). ...
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### Simple example of how “Bayesian Model Averaging” actually works

I'm trying to follow this tutorial on Bayesian Model Averaging by putting it in context of machine-learning and the notations that it generally uses (i.e.): ...
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### Average timeseries with regards to information

I am defining the distance between timeseries using a compression based metric (CDM) https://blog.acolyer.org/2016/05/10/towards-parameter-free-data-mining/. In that context, do you guys have any idea ...
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### CFA indicators - means across raters

I have a CFA model that has six items, each rated by 2 raters (no rater ids). The models with residuals across raters or items was nonidentified, and the second order model was non identified. The ...
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### Estimating classifier performance using cross validation, average accuracy and standard deviation and

I want to estimate a classifier accuracy on benchmark data. Data is not split into training and testing so I use 5-fold cross validation, using 80% of data as training and testing on 20%. Each test is ...
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### Average treatment effect on the treated

There is something conceptual I don't understand with average treatment effect on the treated. Say you have two binary outcomes $Y_i(W_i)$ in which $W_i$ is either 0 or 1 (treatment). So I either ...
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### Trying to calculate industry averages for female employees

I have a dataset that lists employers in a particular industry, the number of employees they have and the breakdown of employees as male or female. I'm trying to get a number that reveals something ...
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### How do I test if the average difference between two groups are statistically significant?

Suppose I conduct a survey of 1000 males and 1000 females about their age and I found that the average male age is 50 while the average female age is 40. What information do I need and how do I test ...
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### How to report standard deviation while averaging a dataset multiple times?

This question appears simple but it may not be. I have a year long, 1 degree, daily, 3-d global climate data set (temperature) representing different latitude, longitude, and days. That means the data ...
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### Weighted average vs “unweighted” average in probability

[UPDATE] Terms I used: - Weighted average: weighted arithmetic mean - "Unweighted" average: arithmetic mean I went through some of the forums here and looked for explanations online but I couldn't ...
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### Is weighted average the right method for this business problem?

I have 5 customers who order 10 products. Come April 1, 2016, the prices of all 10 products are increasing. The 5 customer each order all the 10 product types. I have the following: 1. Individual ...
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### Calculating average of averages in absence of complete data

I have a dataset with three variables: ...
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### Calculating the Title odds

Given a set of expected values within an event. How do you calculate the probability of each of them occuring the most? i.e. Who will win the league? total goals scored in a season , given expected ...
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### How do you cross validate a regression model with a variable derived from historic information

I have a logistic regression model for conversion rate after sending a customer a voucher. The dataset consists of all previous occasions where customers were sent a voucher, with the response whether ...
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### comparing averages of different sized groups

I want to look at the number of arrests per head of population in some counties. What I am doing is taking the census for each period and using 10 year periods (so dividing by 10). For 1810-19 I ...
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### Determine contribution percentage

I'm trying to determine the individual category percentages once their weights have been applied. The easiest way to describe what I'm asking is to show my workings: ...
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### Calculating mean and maximum with open ended bins

I am using excel and I need to work out the average lives of machinery as well as the maximum life. However all I have is the number of machines over ten years and the number of machines under 10 ...
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### Types of Mean in statistics

Can anyone explain trimmed mean, interquartile mean and trimean with examples? And also explain what is the use of this and where we use in real life?
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### Calculate Forecast Error: Different ways using the mean?

Example: I've got an forecast with 2000 values. Let's say they are for one year. I can group my values into months. Every month can include a different number of single values. (JAN with 200 values + ...
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### How to compare 2 averages, when their sums are different

I am stuck at tring to find a convincing anwer to this question. Suppose I go a Shop A and Shop B to purchase Apples and Bananas / / Now If I calculate average Cost per Product in SHOP A = (10*10 ...
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### Product Matching: Calculating average score for data-points with penalty for outliers

I'm working on a product matching feature that works on datasets like the one below: ...
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### Average curve from set of curves

I have done some initial analyses on some patient datasets regarding neuro-degenerative diseases. A method I've used is DFA (Detrended Fluctuation Analysis) in MATLAB, which produced a family of ...
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### How to properly calculate average need-based aid met by an institution?

As an institution we give out a certain amount of financial aid every year (need-based aid) to each student. This need-based aid does not always meet the students estimated need. My task is to compare ...
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### Average waiting time in an exponential distribution

I have come across the following problem in one of my courses: Let's suppose a patient in a hospital is waiting to be picked by one of the two doctors available. The time till a new pacient arrives ...
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### Average value when it is not included in the support

There are a few ways I think of averages of a (discrete) random variable: Average is an OLS estimate of running a regression of the random variable on a constant term. In that sense, it is a value ...
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### How to decide about the number of looks (window size for ensemble averaging) in SAR images?

This question has frustrated me for a while. In order to find an answer I sent an email to prof. Yamaguchi, the author of the paper Four-Component Scattering Power Decomposition With Rotation of ...
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### Method For Calculating Performance from Average Scores

In a simplification of my problem, let's assume we have players who can get an integer value score $s$ considering $\{ s \in \mathbb{N} : 0 \leq s \leq 3 \}$. Same sample data for scores: Player A: ...
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### How do I compute an average when one of the measurements couldn't be measured?

In my biology class we were doing a lab on respiration rates of peas. We used a respirometer with a small pipet tube (markings up to 1 mL) to measure the volume of gas; by immersing in water, the gas ...
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### Why 'Assumption of Uniformity' for Mean?

I am teaching some very basic statistics for grouped data. In a different class a few years ago I made an 'assumption of uniformity' about the data: within bins, data is uniformly distributed E....
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### SVM classifier - can I average multiple models?

I'm performing SVM classification on a relatively large data set (~1M rows, 4 variables). I want to assign a classification score to each row, not evaluate input parameters, so following the top ...
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### Estimate group averages

If I have 100 numbers from two separate groups $X$ and $Y$. How can I manually estimate or derive an algorithm to automatically estimate $AVG(X)$ and $AVG(Y)$? I know all the numbers, but I don't ...
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### Should I exclude an individual being evaluated from group average?

I am working on some statistics of work related performances. Now at first I did my code to calculate the performance of a single individual and compared it to the average of a group in which the ...