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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6 views

Can a fixed effect panel regression model still have endogeneity e.g. from time-variant error in the explanatory variable?

When you formulate a fixed effects panel regression model for observed data using the within estimator in R package plm, can there still be endogeneity present if there is error in the explanatory ...
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22 views

Apriori Algorithm Visualization & Interpretation in R

I would like to visualize the items that are frequently bought together. Also I would like to know how to interpret the visualization. The dataset is taken from https://www.kaggle.com/sivaram1987/...
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Do I use the individual groups when I visualize a regression confidence band for a scatter plot with multiple groups?

I have two groups that are influenced by a covariate, and I want to visualize the scatter plot of the variable of interest ($y$) and the covariate ($x$), color-coded by group. I also want to include ...
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8 views

attributed graphs

how can I cluster a node attributed graph? Imagine that nodes contain 3 numeric attributes and edges between nodes are weighted. are there any algorithms in python to cluster this graph based on the ...
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50 views

Visualizing repeated measures (not longitudinal)

I have repeated measures for a large number of variables and about a hundred individuals. These measures are repeated to assure reproducibility and are not longitudinal time points. I want to provide ...
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12 views

How to plot and compare data at several time points over the entire time frame?

I have a limited background working with R, so your help is very much appreciated! I ran an experiment where I have three treatment conditions (condition assumed to be stable over time). I have ...
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28 views

Box and Whisker plot - dots over the box

I have a box and whisker plot, and I am unable to understand the meaning of the dots over the box. In the following example, I understand that outliers are the data points which do not "fit" ...
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10 views

Covariance of varying sample sizes

I'm trying to analyze a graph where the covariance of cost (relative to quantity) vs. average cost of office warehouse items sold are plotted. What I don't understand is why a product such as desk ...
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10 views

Plots for one continous and the rest categorical variables

I have a dataset with the continuous variable Income as dependent, and the rest are the categorical variables Gender, ...
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36 views

How to visualize data to make maxima and minima clear?

I have a tuple that looks like this when I plot the graph: But the minima are not quite clear. So I tried to use logarithmic scale and visualise the log of the tuple instead of the tuple itself. But ...
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6 views

Creating interaction plots for models fit with GLMMAdaptive

I would like to create interaction plots for a model that I fit to a very large dataset by using mixed_model() from GLMMAdaptive. Interactions that I would like to plot include an interaction between ...
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25 views

How to visualize data from a test?

Context I have some data that would be obtained by conducting an assessment/test. The primary data is the score obtained by each candidate that would take the test which would also decide if the ...
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48 views

Rendering Bernoulli sampling by the binomial distribution

I want to characterize the simple algorithm for selecting, say, 20% of a discrete set when the total size of the set is not known: ...
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62 views

Entering a quadratic term in a logistic regression model

I’d like to know how to plot my quadratic relationship. I ran a logistic regression model that included a quadratic term for age on support for helping at-risk juveniles (1=want to help, 0=does not). ...
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18 views

measure for deviation/error that is guarantueed to be smaller than the mean

I am presenting some non-negative values by using a mean value with error bars, basically something like this: So the mean values are shown as dots and the error bars are displayed vertically, ...
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13 views

How to plot dichotomous presence/absence data to complement timeseries data

I have a daily logger data for several variables. For this example I use 3 variables: precipitation, distance and I dichotomous variable (1/0) which is 1 if the precipitation is in the form of rain ...
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1answer
35 views

What optimization algorithms are best at traversing complicated geometries, and what trade-offs exist between different algorithms?

Hi all :] so short version is just the title, and specifically as pertains to those algorithms included in R's optimx::optimx() under ...
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20 views

Using pandas to check stability in data

I have a conversions table & I am trying to identify Are the conversions in the 'conversions' table stable over time? to identify Any pattern? ...
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13 views

how to plot label leakage

I have a dataset where I'm wondering if some variables have information on the label. The performance of the model is too good to be true (AUC = 85% in train, test, and hold out) based on other model ...
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15 views

Scatter plot after filtering the outliers

I want to create a scatter plot after filtering out samples less than 0 on a log2 scale. I then want to create a second plot to filter out samples less than 3 on a log2 scale. My two scatter plots ...
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28 views

Multiple observations – Wilcoxon matched pairs test R [closed]

I’m dealing with matched pairs graphs in R but I’m not sure there’s a way to keep my dataset as it is and make a graph out of that. Let me explain better. Let’s say I have to take into account 3 ...
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12 views

Chart type for minimum, average and maximum as time series

I want to plot price history with minimum, average and maximum prices: dates on the X, prices on the Y. What is the most appropriate chart type for this? Is there something like candlestick chart, ...
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1answer
42 views

Variable with negative coefficient in Ridge Regression and positive correlation

In my research, I have four independent variables (X1, X2, X3 and ...
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1answer
57 views

Best fit line with probability data

How do I best find a best fit line if my y data is probability functions rather than single points? Obviously, in every regression problem you can include uncertainty on the xs and ys, but I have a ...
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1answer
22 views

Lollipop plot in R with Ridge Regression coefficients [closed]

I have the following dataset, in which I want to understand the influence of four explanatory variables (X1, X2, ...
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22 views

Visualize results of linear mixed effects model of a longitudinal study in R [duplicate]

I've been working on a longitudinal study using a linear mixed-effects model in R. I wonder if there is any way to visualize the results of the linear mixed-effects model. The problem in my situation ...
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1answer
63 views

Plots to visualize results of linear mixed effects model of a longitudinal study [closed]

I've been working on a longitudinal study using a linear mixed-effects model in R. I wonder if there is any way to visualize the results of the linear mixed-effects model. The problem in my situation ...
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14 views

Force-directed graph layout using inter-node distances but not shortest path

I have a collection of complex objects for which I've crafted a quantitative/heuristic correlation metric. For $N$ objects, I have a full $N\times N$ adjacency matrix of correlations, of which $N(N-1)...
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1answer
40 views

Ridge Regression Graph

I intend to assess how some variables relate to a particular response variable: ...
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2answers
58 views

How do i interpret this Scatter Plot

I'm researching on the relationship between Scholarship and years. I have scatter plot below. The x axis is equal to the total amount of scholarship for a student. The y axis show the term a student ...
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11 views

How to plot data where the sampling window is wider than the sampling period

The question is general, but I have a specific example. I am working with aggregated summary data, where I have no access to the underlying raw data. The data is a time series of counts of an event, ...
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1answer
22 views

visualization of posterior distribution for a matrix?

Via Bayesian analysis, I generate the posterior samples for a 2D matrix, representing a correlation matrix for instance. Is there any way or tool to visualize these two dimensional random samples?
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1answer
600 views

Simpson's Paradox

I need some help figuring out whether the phenomenon of Simpson's paradox has occurred. Here is a plot of the first dataset (correlation between probability of contracting a disease vs. hours slept ...
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18 views

Questions about plotting a two-factor anova

I have an experiment where I collected 36 water samples in three different streams (12 samples per stream). Subsequently, I divided these samples into 4 groups (3 samples per group), and treated them ...
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26 views

Creating a colour gradient for a set of data points from scratch

I'm struggling to even figure out where to post this as I realise it is an odd problem, so hopefully someone with expertise in data visualisation can help me. The fundamentals of my code work, but I ...
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16 views

What is the filter experiment?

I read a method to check which model does best in measuring uncertainty. Source: page 485 of Probabilistic Deep Learning: with Python, Keras and Tensorflow Probability The steps are as follows: ...
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13 views

Is there any way to plot conditional effects on their original scale?

I fit an GLMM with brms effect with normalized continuous covariates. How can I plot conditional effect of one of my continuous covariates in its rescaled (original) scale? I am using ...
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30 views

What is the name of this line summary of heatmap

I have asked on SO about some implementation details of my problem. But I have realized that it is hard to ask (and search) if you do not know the name of the graph. Because this community is more ...
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32 views

How to plot the hazard ratio of a categorised variable in its original continuous scale? take BMI for an example

I have BMI divided into quartiles. I fitted two cox regression models that included BMI as a categorical and continuous variable respectively. Now I want to plot the hazard ratio of categorical BMI ...
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1answer
92 views

Residual Plot vs Fitted, linearity and Heteroskedasticity

I am working on a linear Regression Model right now, it has the following format: ...
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29 views

Alternative to spider/radar chart when dealing with a skills matrix for more than 10 people

I have a skills-matrix with skills on 15 people (i.e. 15 observations). I would like to visualise the skills matrix and thought about a spider/radar chart. Due to the high number of people, I suspect ...
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54 views

STATA margins dydx with over(.), continuous variables and interaction effect

I have a logistic regression model with two variables (A and B), which I also interact. A and B are both continuous. After the estimation I want to use the margins command to plot the marginal effect ...
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2answers
41 views

What does the "mass" of a box plot mean?

By “mass” I mean the size of the two subretangles that make up the box in a standard box plot. I thought the mass quantified the observations below and above the median but if it did so every box plot ...
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28 views

Summarise results of multiple posteriors on simulated data

For a Bayesian model $M(\theta_1, \theta_2)$ I simulated 100 datasets with fixed $\theta_1$ and $\theta_2$ and then ran posterior sampling on each dataset using model $M(\theta_1, \theta_2)$. Now, my ...
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1answer
23 views

Effective way to visualize the differences between various sets of data and a reference set

I'm not a stat person, so I apologize if this question is trivial. I have data obtained from several simulation methods that need to be compared to experimental data (which presumably represent the &...
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33 views

Plot for a GAMM created with predicted() differs from vis.gam() plot

I have a problem with two forms of plots of two GAMM models: The first model is a baseline model estimating the time trend of measured mood during 30 weeks of 2020 (N=371). Lot's of missings, though (...
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1answer
26 views

Principal Components of PCA

I have a dataset combined with normals samples and fault samples. We use PCA on normal samples and faults samples separately. I observe that the last PCs help us to have better separation than for ...
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1answer
51 views

Graphing Simple Presence/Absence Data?

I have to create a graph (maybe cdplot) for a final project. I have presence/absence data for around 20 years for a species of frog. ...
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1answer
44 views

How to compare paired qualitative data?

I would like to compare two methods on qualitative and paired data. To summarize my study for you (it's for an internship), I have activity values ​​that were measured on 13 sites, for 12 species of ...

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