# Questions tagged [range]

range is the difference between the largest and smallest data value.

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14 views

### Expanding range of data (for PCA)

I am interested in computing 5 indices of structural connectivity between 116 different brain regions, and their associations with behavioural performance. I plan on using prinicipal component ...
47 views

### Determine what range represents 95% of a skewed data set

I have a set of reference wetlands and experimentally manipulated wetlands and I am comparing many water quality variables between them. My thought was to first identify which of the manipulated ...
42 views

### Can you recommend neural network suitable for finding minimum and maximum of numbers in list with some noisy data?

Let's have a list of integer numbers. These are generated about some "center" value with some tolerance +/-. I call this the "range". Also - there is some noise - the numbers are ...
20 views

### Practical use for heritability value at sub-population level?

For me as a layperson, heritability is something that much smarter people than me calculate, and there are several questions already on the forum about how to do that (eg, this and this). I ...
64 views

### How to "squish" a range of numbers to the same spread between 0 and 1

So I have a range of numbers that I need to "squish" into values between 0 and 1 - where lowest value is zero and the highest is 1. I need preserve the ratio. For instance. If I had these ...
24 views

### Given the range $R$ of $n$ data points, what is the range of these points' standard deviation? [duplicate]

Given the range $R$ ($= max - min$) of $n$ data points ($x_1, x_2, ..., x_n$), what is the range of these points' standard deviation $\sigma$? It's easy to see that the min value of $\sigma$ can be $0$...
34 views

### How to find the bound of a time dependent variable?

I am working on modeling my problem statistically and I need to Know the bound or range of my variable. It is a time series variable position(t) where position(t+1) = position(t) + a.X - (1-a).Y a is ...
54 views

### Why won't my xgBoost regressor predict above a certain value, even though it sees higher in training?

I have created my first xgboost regressor. I input some self collected data, which I scale using sklearn's standardScaler. The model is trained on approximately 25,000 samples, and then tested on ...
12 views

### In computing the range of raw scores, if the lowest value is 0. Should I still use it as my lowest value to find the range?

My professor gave us the raw scores. We need to find the range. The highest value is 93 and the lowest is 0. Here's the raw scores 66,85,40,5,12,12,18,23,1,15,1,6,81,50, 21,0,27,5,13,0,24,22,5,1,32,12,...
235 views

### Why do we add an extra decimal place when we calculate the range in statistics?

From Mario Triola's textbook: I understand that we add a decimal place when we calculate the median (it is possible to have (a+b)/2 ). I absolutely do NOT understand why we do that when we round off ...
14 views

### Calculating spread (standard deviation or CV) for ranges of values

Due to data suppression/confidentiality, I only have ranges of values, not individual data points. I have the sample sizes, the percentage of acres that receive ranges of fertilizer application rates, ...
87 views

199 views

### Any other way to calculate range of transformed variable?

I have been doing questions related to transformations of 2d random variables. In a question I have to find a range for $$u = (x-y)/2$$ and $$v = y$$ where $x,y > 0$ So is it necessary that ...
135 views

### Unbiased estimator of standard deviation

I'm reading "Properties of range-based volatility estimators" where the authors talk about using the range of a distribution ($h$ - $l$) to estimate its volatility. Specifically, they say, Daily ...
25 views

### If a false positive rate of α is desired, what is the acceptable range of false positives one would expect from a sample size of n?

For instance, suppose I design a test to have a false positive rate of 5%. I am going to perform this test on what is assumed to be an all negative population. If my sample size was 20, I would expect ...
1k views

### Find Q1 and Q3 from median and IQR

A study gives the following: $n = 67$ mean = 73 sd = 68 median = 55 IQR = 66 Is it possible from this information to get the actual Q1 and Q3 values? I used the $n$, mean & sd to get 95% ...
188 views

### Convert negative to positive percentage range into 1-10 scale

I know how to convert a range of positive % numbers into any positive integer scale, but am having trouble figuring out how to do it when my % range includes negative %s. Example: I have the ...
62 views

### How to scale data to desired range? [duplicate]

I have a table with 3 columns X, Y and Z with n rows. The range of the data is 0-255. But I wished to scale the values such that the range becomes from -p to +q (where I decide p and q). I randomly ...