Questions tagged [data-visualization]

Constructing meaningful and useful graphical representations of data. (If your question is only about how to get particular software to produce a specific effect, then it is likely not on topic here.)

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12 views

The ablines on my R scatterplot for ANCOVA results doesn't look right, personal error or model error?

I ran an ANCOVA model, to test the effect of treatment on the relationship between two continuous variables (elephant number and plant density) - please see more details in my last question (What ...
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11 views

Data Visualization inspiration

I'm struggling with figuring how best to visually look at the trending the following. I have the following data in rows ...
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11 views

Limits in exploratory analysis

I have a question about exploratory analysis. I don't understanding the meaning of the problem, so I am not so sure. "Give an example of a simple connection, the pattern of which is not or hardly ...
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20 views

How to best display the distribution of a large dataset with many outliers? [duplicate]

I have a very large data set (~300'000 data points) and a subset of it (6000 data points), which shows the difference of travel time [in seconds] of agents before and after a road closure. I want to ...
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25 views

Expert description of data visualization figures

There are good sources that teach the different kinds of plots to visualize data analysis results. Especially there are some good statistics books that show different plots to visualize data in ...
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11 views

Interpreting Scatter Plot [closed]

I am trying to interpret this scatter plot that should show how old an dhow rich a group of customer is (the chart has normalised data from a CRM database). My question here: 1.) Can you show the ...
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1answer
26 views

Continuous continuous interaction term in R

My problem is visualising a regression I have made, but I am unsure on how to visualise it. I have an interaction term both variables are continuous. What graphs can I use to accurately depict this ...
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1answer
22 views

Graphing a fit line through existing scatter plot [closed]

I've got a scatter plot of two continuous variables and they are labelled 0 or 1 depending on a third binary variable. I would like to draw a fit line through the 0's and the 1's on my scatter plot. ...
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16 views

ICEPlot in python for cervical cancer using PDPBox

I was going through https://christophm.github.io/interpretable-ml-book/ice.html and trying to re-create the plots using python. What I did is to make a model, and pass it as parameter to the PDPBox ...
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10 views

Seeking suggestions for data display for table with supercategories, sections and bold-heatmap? dartboard?

I'm trying to visually display the results of a table where we used vote counting to categorically summarize (in many ways) multiple outcomes from a list of studies and compare to how they were ...
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41 views

QQ plot distribution check

I want to check if a distribution is log normal or not by using qq plot. So for convenience I am creating a lognormal distribution using stats and checking it in ...
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Rang variance and standard deviation [closed]

Question Three The fallowing data is related the salary of 10 staff worked at the ABC Company. 760, 550, 600, 700, 200, 1000,310, 820 , 550 750. Calculate the Range, Variance and Standard deviation
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1answer
28 views

Training a neural network, I can't figure out my learning curves

I am cross validating a model, splitted in 5. Then I plotted for each split, the loss and the val_loss by epochs. I get something like that: I found this plot disturbing. Only the first one seems "...
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outcome adjusted plots in cubic spline regression R

In this pubblication authors present plots of cubic spline regressions adjusted for a variable: where: CAs = Chromosomal Abberations FA exposure = FormAldeide Exposure I basically have an ...
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1answer
183 views

What is that bar chart called? [closed]

The following bar chart is one of the most commonly drawn, and yet I cannot find any dedicated name for it. It uses a categorical independent variable (dimension) for the horizontal axis and a ...
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2answers
163 views

What is this chart called?

I designed this chart to combine the benefits offered by a Bar chart and a Pie chart. Its closest known alternative is the Pareto chart. With this (new?) chart, the Line graph is replaced by a ...
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1answer
29 views

Testing the relation between 2 Categorical Data (Gender and 5-leveled consumption) and Visualizing it in R

In my dataset, there are 3 data that I would like to check for relations, which are ...
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22 views

Finding Patterns In a 3D Plot

I am starting to use 3D graphs to visualize relationships in my data. The reason I am doing this is to try and maximize my predictor variables. Since I am working with financial data the relationships ...
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1answer
181 views

How do I interpret the angles of two concentration ellipses?

Consider a map with two concentration ellipses like this below. The Vomit_y group is (almost?) perfectly vertical, while the Vomit_n group seems to be oriented at about 45 degrees. I understand that ...
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21 views

Best way to plot logistic regression?

I've tried to search but haven't found anything simple enough for me to grasp. I'm using STATA and I'm trying to plot a simple regression result with an obviously binary dependent and a continuous ...
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17 views

How to visualise the distribution of method length in source code

I want to give a presentation about the status of a certain software project. Among the problems, there is a lot of long, spaghetti-like methods. I plan to parse the source code and gather stats about ...
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1answer
39 views

How to graph distribution of Order statistics?

Is there a software that can graph the pdfs and Cds of an arbitrary number of order statistics or is there some code such software? How to do it? I'm trying to understand the distribution of order ...
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1answer
37 views

Repeated binomial experiment with different settings, how to plot chances based on these settings?

I'm using R and have a dataset which contains data for a certain experiment which is tested multiple times in environments with different P values. The success or failure of the experiment is denoted ...
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63 views

Force directed graphs vs. diffusion maps vs. other dimensionality reduction methods

Can you help me with a conceptual explanation of how force directed graph drawings work compared to other methods in the context of dimensionality reduction for visualization purposes? In particular, ...
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18 views

How to show that the dependent variable decreases to a plateau over trials?

One of my hypotheses is about the dependent variable decreasing to a plateau over trials in control and treatment conditions. I have a regression model that shows a decrease in the dependent variable ...
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2answers
38 views

Understandable way of thinking about higher order tensors

I study deep learning and the one of the major problem I face is I can't imagine shape of higher order tensors in my head. for instance - A 2d tensor - (x,y) is a rectangle with x,y along its length ...
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21 views

What is a proper visualisation for different distributions of the same thing?

Essentially I want something like this: Here the various distributions are not related (although they appear so by the colours and this is the problem): CPU Brand is: Intel, AMD; GPU Brand is: ...
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15 views

What are the limitations of non-negative matrix factorisation when reducing the dimensions of a data set?

From what I understand NFM (non-negative matrix factorisation) is constrained by the factor that it only supports data sets with non-negative values when reducing the dimensions of a data set. ...
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8 views

Comparing Modelled/sampled distance time graphs

I am comparing the journey times of modelled vs observed of vehicles along a set of roads. Usually this would be done visually but obviously the line will always be biased to appear to be correlated ...
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28 views

Betweenness Centrality giving different results with Package Igraph R vs Networkx Python (and Gephi) [closed]

Basically, I don't understand what is going on. When I calculate the normalized betweenness centrality with R using this function: ...
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1answer
31 views

Need some eyes on my dataset: can we argue here that there is a random spread around a constant?

I have this huge data set where I am looking to find trends. However, this one quantity (Figure) seems to randomly spread around an almost constant line (with the exception between 1600-2300). I did ...
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1answer
35 views

How to compare volatilities of cryptocurrencies [closed]

Data: daily spread (highest price - lowest price at a given day) of Bitcoin, Ethereum and Ripple. The spread values are an absolute amount in US$. Bitcoin is worth much more than the other two and ...
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21 views

Interpreting a time series graph

Hi, I'm new to time series. Let's say t represents weeks and y represents temperature. Is it correct to interpret that on week 25 temperature was -1? If so does this mean that y25 = -1?
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How do I understand “Ballentine” diagrams of variance for a univariate OLS regression?

I recently learned about the use of Ballentine [sic] diagrams to illustrate some principles of linear regression. There appear to be a few different implementations of this principle. Notably, in some ...
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1answer
25 views

What statistical test should be performed in this setting?

I am analyzing a dataset. There I have 3 different "Lab test report findings" and 1 "clinical findings" which is obtained by the clinical examination of the patient (most of the time this clinical ...
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1answer
16 views

Plot a character on R instead of a point [closed]

I want to plot the coordinates X = c(1,2,3) Y = c(4,5,6) but I want to have the custom characters chr = c("A","B","C") ...
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1answer
52 views

What does this mean? “Represent the scatter plot for the dependent and independent variables for each data category.” [closed]

So I am working on the esoph dataset that is provided by default in RStudio. The data set explores correlations between age, smoking, drinking and oesophageal cancer. One of the questions we have to ...
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2answers
39 views

What does this mean? “Create a histogram for each single numeric corresponding to different categorical variable” [closed]

So I am working on the esoph dataset that is provided by default in RStudio. The data set explores correlations between age, smoking, drinking and oesophageal cancer. One of the questions we have to ...
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1answer
55 views

Produce a confidence interval contour plot for a linear fit (with two parameters) in Python

I would like to produce a confidence interval contour plot in Python based on a least-squares linear fit to an arbitrary set of data. I apply the polyfit function for a linear fit (i.e. y = mx + c) ...
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40 views

How to plot multiple classifiers' ROC curves using scikitplot?

I have classified a data with multiple classes (not binary) by using several classifiers, and I would like to compare the performance of these classifiers by drawing their ROC curves using scikitplot. ...
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2answers
20 views

Clustering temporal data

I have a large collection of bus arrival times (a specific bus number at a specific stop). I am trying to determine the best way to cluster the data so I can see what time the bus usually shows up at -...
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1answer
25 views

Displaying Time-Series Data as One Graph

I have the following graph, built from Matplotlib: The top area bar graph is the volume of transactions processed for a given day. The bottom line graph is the average processing time for that day. ...
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1answer
29 views

Simple Explanation about Logistic Regression Plot

I was reading an article about logistic regression and I got confused by one of the pictures: https://towardsdatascience.com/introduction-to-logistic-regression-66248243c148 First animated gif from ...
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13 views

How to graph a survival function when time is one of the IVs?

I am reviewing an article, so I can't be too specific, but the authors are doing a survival analysis of outcomes of stroke and one of the independent variables is the time that the person had a stroke ...
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1answer
17 views

Describe the graphs linear association between these two variables height and width

I have written the code below to create a scatterplot to visualize whether the two variables are linearly associated but I am not sure how you would describe this output. I would say it is not ...
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8 views

Presenting the convergence of a set of distributions to a particular distribution graphically

This is not directly related to doing statistics, but rather presenting statistical data. I have a set of values $$\{x_i\},{i\in I_t},$$ for each $t\in [0,1]$. Every set of values $\{x_i\}$ for a ...
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1answer
59 views

Interpreting a boxplot with outliers [closed]

I have this specific boxplot that I would like to interpret in my conclusion for my master thesis. I noticed that the most right box does not have any outliers, but a very broad Q2 and Q3 range. Also ...
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1answer
38 views

Question About Graphing

Let's say I have two variables (smoking and lung cancer) that I'm trying to plot on a time series graph. My data for smoking looks like this: 1990/1991 66,000 people smoked, 1991/1992 75,000 ...
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1answer
47 views

Data visualisation for binary response data

I'm seeking alternative ways of representing my data. I have conducted an experiment, with two manipulated variables (v1 from 0 to 3, v2 from -3 to 0), and by factorial design it yields 4*4=16 ...
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14 views

Question about marginalization

This is related to a research project I'm working on, I hope someone can help me clear up this confusion... I have a 2d array of log-likelihood values that I obtain after sampling from my posterior ...