A histogram is a graphical representation of the frequencies of a continuous variable. The variable is divided into bins and a bar is drawn for each bin, proportional to its frequency in the data.

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how to measure similarity of two lists of continuous data with different length

I have two lists of continuous data with different length. a) How should I measure (dis)similarity of these two lists? or, as these lists can be formed into histogram, how can I quantify ...
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19 views

which classifier to choose for probability histogram-like features

I have a populations of 500 elements. Each element is represented by a 10 dimension feature vector which sum of element is equal to 1 (you can think about it as a histogram of probabilities). In ...
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5 views

Quantization threshold selection

I have the 256-bin histogram representing a distribution of the values taken by a certain descriptor element. This descriptor element takes the values in 0-255 range, hence 256 bins. I want to ...
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59 views

Paired t-test vs Wilcoxon signed rank

I conducted a pilot study (n=14) which was evaluated retrospectively. I have four parameters with a pre-intervention and post-intervention score that I want to compare. I am wondering whether I can do ...
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8 views

Count of the biggest bin in histogram, C#, sharp [migrated]

I want to make histogram of my data so, I use histogram class at c# using MathNet.Numerics.Statistics. ...
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0answers
16 views

How to count these transitions - in R [migrated]

Given a table of values, where A = state of system, B = length of state, and C = cumulative length of states: ...
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2answers
75 views

Sample from distribution given by histogram

Given a histogram obtained using given data points, how do I randomly sample from the distribution predicted by the histogram? Any conceptual comment / R code would be welcome.
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19 views

Computing 'histogram' similarity when the elements can be positively or negatively weighted

The 'histograms' I want to compare may have positive or negative bin-values. I use the quotes because I am not sure histogram is the correct name. The elements that are being sample have associated ...
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0answers
26 views

What kind of distribution is my QQ-plot and histogram?

I am pretty in new in distribution issues and I am trying to figure out what kind of distribution I have. I have a historical data with more than 300 observations. I will calculate Value-at-Risk ...
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10 views

What's the easiest way to ignore one row of data when creating a histogram in R? [migrated]

I have this csv with 4000+ entries and I am trying to create a histogram of one of the variables. Because of the way the data was collected, there was a possibility that if data was uncollectable for ...
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1answer
41 views

Non parametric density estimation

In general it's possible to estimate a given multivariate density function $f(x)$ using some non-parametric methods such as kernels or histogram. What are the conditions on a function $g$ such that ...
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1answer
22 views

How to recursively normalize my histogram count

I need to scale my histogram as I cannot store them with large numbers. Hence, I need to normalize it. I have taken normalization factor as sum of total population. But this need to happen ...
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10 views

The endpoint of the last interval in a continuous variable

Suppose we have a series of observations of the continuous statistical variable $X$. In an increasing order of $X$ we have: $$X:x_1,\cdots, x_n$$ I want to put them into classes or bins. Suppose for ...
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11 views

using histogram distances for clustering

Business context: for our retail client there are a few crucial products. All of them have 3 phases (introduction, stable phase and end of life). After correcting for seasonality and discounts (as ...
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1answer
40 views

Right skewed asymmetric Gaussian-like distribution

I am trying to find a possible candidate as a fitting function for a distribution that looks like the following I know that this isn't a straightforward question, but I would like a simple function ...
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0answers
71 views

Why are histograms often filled?

Many histogram functions part of scientific analysis software has the default configuration to fill the histogram. Examples are Matlab and Matplotlib. On the other hand, the default for line plots ...
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32 views

Assess moments & normality of data from histogram

I have produced a histogram of my actual data; then I plotted its normalized graph on the same plot. How can I compare the first four moments (mean, variance, skewness and kurtosis) of the actual data ...
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0answers
10 views

How classify output of a composite indicator using fuzzy concepts?

Suppose that we created a composite indicator to compare a company branches performance in a country. This company has 5 current levels for performance. This is histogram of composite indicator output ...
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88 views

Comparing two histograms using Chi-Square distance

I want to compare two images of faces. I calculated their LBP-histograms. So now I need to compare these two histograms and get something that will tell how much these histograms are equal (0 - 100%). ...
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19 views

Q-Q Plot for Simulation Study with Bernoulli Data Issue

I'm currently trying to carry out a simulation study for Bernoulli Data to show that the sample proportion, ˆp, is also approximately normally distributed when the sample size is large. From an ...
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1answer
71 views

What type of distribution is this?

What kind of distribution is the one reported here below?
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23 views

On fitting a Poisson distribution to make sense of data

Hi guys I am working with a regular network which has the shape of a square grid and contains 100x100=10000 nodes. The edges (links) between these nodes simply ...
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46 views

How do i compare histograms?

I have not learned chi^2 yet,but I need to compare two histograms. How do I go about doing that? My AP Statistics Project is due Friday and I have asked my teacher but I am not entirely sure what to ...
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23 views

Finding a representative upper limit of a large dataset

I have summer cumulative solar radiation data derived from a model on an area in North-West Italy. I extracted the modelled values from specific regions (i.e. within rock glaciers outlines), obtaining ...
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77 views

How to perform logarithmic binning

I'm trying to program (in C++ if relevant) some functionality to plot a histogram that does logarithmic binning. The range of values run from 0 to M (there is a possibility for negatives but we're not ...
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1answer
42 views

About multiple samples and histogram

If we take multiple samples of a process and draw a histogram of the sample: does the range reduces as the sample size increases does histogram form a normal distribution does the sample ...
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45 views

Inference of frequency of values in a poisson distributed histogram

For some data there is a histogram, which has bins with varying sizes. Is it possible to infer the frequency of the values for smaller segments of the bins, favourably with Matlab? With the attached ...
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33 views

Optimizing probability density function binning

I have a probability density function which has the range of -103 to 117 with 220 bin. I would like to minimize the bin point preferably less than 20 bin that will still capture the shape of the ...
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17 views

Select a fittting model for histograms varying the number of Gaussians

I have many data in the form of one dimensional histogram, to give an example consider the data at http://pastebin.com/embed_js.php?i=1mNRuEHZ I expect that these data are obtained from a pdf ...
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73 views

Interpreting steep histogram, fitting distribution

I'm trying to fit the distribution to the data. I started with histogram. Note that y axis is in logarithmic scale since the histogram is very steep. How should proceed to find actual ...
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2answers
86 views

The frequency in histograms

My question is trivial, but the problem is that I found contradictory answers on internet. So I have the following sample data: ...
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1answer
74 views

Why is my density plot just a line on the bottom?

Basically, I'm just trying to plot a curve over my histogram for the weight of a few students. lines(density(weight), lwd = 2, col = "red") However, what I get ...
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30 views

Creating a Histogram from data that is already binned [closed]

I am new to using R, and was hoping to get some help. I was given data that is already binned, and bins are not of equal length. I have summarized the data as follows ...
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44 views

Histograms with similar means but different appearances

I have two histograms shown below. As you can see, the two histograms are different in appearance. However, when I calculate the mean of the two histograms, they are pretty similar. The mean for ...
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1answer
57 views

Eliminate zero counts bin from histogram [closed]

I have an histogram of a random variable X1 with some zero counts bins: ...
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61 views

How to characterize opposite of heavy tailed distribution?

I have a bunch of histogram distributions. In some of the histograms (let's call these Type-A), the initial 2-3 bins are extremely tall compared to the remaining bins. In others, there is no ...
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2answers
180 views

How do you find a cutting point / strong slope within one-dimensional data

I have one-dimensional data. I want to find possible natural cutting points (strong slopes) within the data. For instance, if the data is ...
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1answer
31 views

Are there any metrics that return only scalar quantities for comparing two histograms?

I have multiple 20x20 matrices that represent histogram distributions. I want to compare these matrices with one another, and I'd prefer a metric that would return a scalar metric that correlates to ...
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2answers
60 views

Is there a general/golden rule for appropriate binning in a histogram?

I was wondering, is there a general rule or a "golden rule" that sets the appropriate bin size as a function of statistical parameters such as sample size, mean, median, mode, standard deviation, etc. ...
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1answer
49 views

Histogram in JMP 11 [closed]

While plotting histogram in JMP 11, the option to set the bin width is not available. I also tried doing it with the axis settings, but the X-axis setting is disabled (X-axis has the variable values ...
2
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1answer
83 views

How to determine similarity between histograms? (Which metric to use?!)

Hello Stack Exchange community, I'm relatively confused on what to do in this scenario. I am running an experiment that retrieves data of interest and stores it as an array. Experimental conditions ...
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1answer
49 views

histograms for repeated measures

I have a repeated measures data set where each variable is measured at several time points.That is say I have 20 subjects in my sample. Each subject is measured for three time points. (There are some ...
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104 views

Is this a multimodal distribution?

This histogram is part of a task about descriptive statistics. I thought it would be easy, and it is, but i am not sure about this one. First I described this histogram as slightly positively skewed. ...
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1answer
114 views

Researching the frequency stability property

I have seen this short, wonderful video about the frequency stability property (also there is another video from this guy under his Kickstarter project ArtOfTheProblem; they are both great, and I ...
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57 views

Using Dirac Delta functions for estimating a probability distribution

I'm having some trouble understanding this slide. It's mentioned in the context of gaussian distributions. I sort of understand the Dirac delta "function". The main difficulty I'm having is with ...
2
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0answers
70 views

Make 2D color histogram with uniform distribution (Likert scale)

UPDATE: I've been told that I cannot specifically ask for help in regards to the programming (MatLab and PR Tools), but instead should seek help for general techniques. So that's what I'm doing. Long ...
2
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0answers
34 views

Error on histogram computed on autocorrelated time series

I am struggling to find an answer to this quite basic question. When computing a histogram on a time series which has some correlations (i.e. measurements are not independant), how to estimate the ...
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89 views

Knuth rule for number of bins of a histogram vs. chi2 fitting

I try to make a histogram and then fit some distribution to it by means of chi2. The Knuth rule (I have some bimodal cases so I'm not using Freedman-Diaconis or Scott) gives me the following histogram ...
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1answer
84 views

What is the difference between simple histogram and histogram LBP?

What is the difference between a simple histogram and a histogram LBP (local binary pattern)? Can someone provide the intuition behind histogram LBP?
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20 views

what is the drawback of DLBP(Dominant local binary pattern)?

Although the DLBP features encapsulate more textural information than the conventional LBP features, they lack the consideration of distant pixel interactions. The reason is that the binary patterns ...