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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73 views

Plot a tree from RandomForest object

I trained a randomforest using the RandomForest package on R. I am interested in how the most useful variables are split into the classes, So i would like to visualize a tree that is somehow an ...
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What the fundamental subjects and tools should I learn to handle the data and build interfacing model based on the data analysis?

I am going to build a model which is completely dependent on meteorological, environmental, geographical, and other variable related to solar system installation. Load profile data also is going to be ...
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How can I get correlation plot between survey responses (R)?

I am performing an analysis on a survey response with answers like(most likely, not at all,a lot). I want to see correlation between responses of two columns. For eg, does "a lot" of one ...
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Plot pooled mixed lme model fit using cubic regression splines

I'd like to plot the following model: ...
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Plotting the results of a zero-inflation poisson mixed effect model in R?

I am currently running a series of zero-inflation poisson mixed effects models and was wondering what the best way is to plot the results of the conditional model portion. I have tried using the ...
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How to plot sparse timeseries data (preferably using Google Sheets)?

I have a table like the following, showing times my DSL modem lost connection to the ISP and how long until connection was restored (full data, if you're very bored): Date Duration 01/10/2020 01:08:...
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How should I interpret these ACF / PACF plots for a time series?

I am trying to determine the most appropriate degree of difference to start building an arima model for this dataset. I already know that I need a first difference, but there is a seasonal component, ...
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1answer
49 views

How to efficiently present graph for this data

I have three variables. In the first table CPU value is fixed and similarly in the second. If I generate a graph for this data there will be four different graphs and then another four graphs if ...
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What are some Multivariate Imputation by Chained Regression (MICE) diagnostic plots?

The mice package says, "Many diagnostic plots are implemented to inspect the quality of the imputations." What are those plots? Which are useful? How do you use them?
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Is an unweighted rolling average useful to overlay on to a daily percentage plot?

The data I have is in the form of customer receipts. Items are grouped into categories such as Dairy, Produce, Meats, etc ... I am putting together a dashboard of information, one plot of which is the ...
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1answer
42 views

Using visual representation of time series of unequal length

I would like to apply methods like Gramian angular field, recurrence plots and Markov transition fields to a time series classification (TSC) problem where the time series themselves are all of ...
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How to interpret correlation heatmaps?

I've noticed that correlation heat maps are a popular method of visualising data, but I'm not sure what insights they provide. I can understand why we're interested in the relationship between ...
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52 views

How to differentiate statistically between two numerical continuous datasets?

Sample from: Green - Gamma(45, 1); Red - Normal(375, 19) These two samples clearly come from two different distributions. Is it possible to verify that these two samples come from two different ...
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Visualizing regional disparities by three connected parameters

I have a research topic (regional index) which must be described by three parameters. These three parameters should not be presented separately as they are closely related (an important part of a ...
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26 views

Scatter Plot with Y depending on X

Does a scatter plot make sense if our Y variable is a part of the sum of the X variable? For example, say: ...
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Does the N-dimensional hypervolume refer to the N attributes we have in the training sets?

If we have $N$ features in the feature set that is being used to train a machine learning model, does the $N$ here cause the data points to be in hyperspace provided that $N > 3$? I'm assuming that ...
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20 views

Visualizing Cross-Level Interactions from Stata Output

I am estimating a multi-level ordinal logit model in Stata. The dependent variable is happy (0,1, and 2) The individual-level predictors are married (0/1) and age (continuous). The country-level ...
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25 views

Can I use a single letter or symbol to represent “actual” in a table?

I have a chart that displays numbers for 2017, 2018, 2019 and 2020, but the 2020 numbers are based on projections - I want to display the "actual" value on the data label next to the ...
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Why data points on Weibull plot lies outside of probability line?

As shown on the pic from ReliaSoft wiki site below. Data points located not exactly on the probability line. If parameters estimated with MLE, then F(t) for plotting data points and probability line ...
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28 views

Residual plot transformation question

I need some help figuring out what kind of transformation to do on a residual plot. Essentially, I have to make a residual plot of a player's salary in the NBA compared with their points scored. Here ...
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1answer
48 views

Challenging visualization task: simultaneously visualizing 15 regions by 3 descriptive values

I have a rather challenging visualization task. 15 geographical regions (data points for plot), each described by 3 continuous values and all these values have confidence intervals. The aim is to ...
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How best to visualize parts-of-a-whole data over time (similar to stacked area graph) with negative values?

I would like to visualize many proportions relative to their summation, where each proportion could be a positive or negative number. A perfect tool is the stacked area chart, example: But this does ...
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34 views

Interpreting LDA graph in R [duplicate]

I am trying to carry out linear discriminant analysis and plot the results graphically: ...
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22 views

How to evaluate a regression model with multiple results?

I created a neural network for time series forecasting. My experiments involve comparing the effects the different regularizers have on the model. I used cross-validation and measured my model's ...
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31 views

How Do I Create a Better Model?

Disclaimer: I am a senior undergraduate student of Political Science with little proficiency in Data Science; please help me understand better and forgive any ensuing statistical illiteracy! TL;DR: I ...
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Whitch tool is used to do such a quartile comparison [duplicate]

I was doing a journal comparison via scimago website and found such a wondefull graph that compares two criteria from the journals I have chosen. Here is the graph: My question: Are you aware of a ...
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18 views

Reporting, figures: good practice to cut y-axes or not? [duplicate]

Figure 1 is easier for identifying the difference. However, sometimes the practice of cutting y-axes is not recommended. Which one to report?
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265 views

Plotting binary vs. binary to identify relationship

What would be the best plot for binary vs. binary to identify the relationship between two variables? Say I have a dataset like this. ...
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Q: Dividing maximum value by minimum value and reporting the difference “in times”

I found this plot good for presenting regional disparities; however, which terms should I use with such figure? This graph shows differences in mean salary between country regions by study year. ...
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How to plot $x^{1700}(1-x)^{300}$?

I'm trying to plot a Bernoulli likelihood function on R: $$x^{1700}(1-x)^{300}$$ But when I try to plot this function on R it looks like this: I think the maximum should be at 0.85, but it shows me a ...
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Illustrative example plots for Markov's Inequality

I've been following this blog post which breaks down Markov's Inequality with a nice example. When I go to write R code that will reproduce these plots, I cannot figure out what the author was ...
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240 views

The best way to plot high amount of discrete data with 2 variables in R [duplicate]

I am trying to see the relationship between two variables (say A and B) in a plot in RStudio. Both are discrete and range from 1 to 10. However, I have 1000s of data points, so given that there are ...
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1answer
56 views

Best practice for presenting odds ratios when variables are on different scales

I have a logistic regression in which most of the predictors are binary, but two are continuous (e.g., age). I am planning to use a simple forest plot to visualise the odds ratios for readers. However,...
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17 views

How to visualize this 1-dimensional data with many location parameters?

What I have: An HTML table containing a time series of measurments of a single value. For example having the columns id,time and measurement. What's the goal: Picking one row the user needs to grasp ...
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1answer
61 views

Visualizing the folly of fitting random slopes for variables that don't vary within groups

Sometime I encounter wrong mixed-models that run without warning. By wrong, I mean logically nearly impossible. Think of a cross-level interaction that is set by the software syntax to AGAIN vary ...
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1answer
62 views

What's the name of this kind of graph?

I would like to create this type of visualization. It comes from a paper about political self-placement in the left-right continuum: Attitudes, Ideological Associations and the Left-Right Divide in ...
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1answer
30 views

How to interpret the representation of data in principal plane?

I have the data X contains the grades of some students in 4 subjects: ...
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106 views

Congestion of N-input Butterfly network

What is the max congestion of an N-input butterfly network where N is an even power of 2? I'm pretty sure it is the square root of N, but what is the exact proof for that?
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1answer
29 views

What is the best way to visualize Likert-type dependent variables with 2x2 binary independent variables? [duplicate]

In a between-subjects experiment, we have 2x2 conditions and several 7-point Likert dependent variables. What would be the best way to visualize this data? I am a statistics newbie, so please forgive ...
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1answer
184 views

Interactions with time-dependent covariates in survival analysis

I am new to R and I just wanted to know if it is possible to test an interaction between a time-varying covariate and a time-invariant covariate in survival analysis? A related question is, can you ...
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1answer
17 views

Term for multipanel scatterplots where each row corresponds to a different variable (e.g. R dataframe plots)

Is there a general term for multipanel scatterplots where each row corresponds to a different variable, as when calling R's plot function with a data frame as the argument? This image provides an ...
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91 views

How did Steve Mould predict his child birth time with contraction duration over time? [closed]

Steve Mould explained very briefly how he used his wife's contractions data to predict the time of birth of their son: https://www.youtube.com/watch?v=k7q0Y2W0Rn4 Does anyone know how he approximated ...
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1answer
32 views

Best way to visualise presence/absence of specific events in multiple case/control studies

I have a dataset where the presence/absence of mutations in 40 particular genes has been recorded comparing normal tissue (e.g. lung tissue) vs a tumour from that tissue (e.g. lung tumor) for twenty ...
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1answer
31 views

How to graph ARIMA forecasts vs past values in R

I have performed an ARIMA model and I am happy with my results. Now I am trying to show that my forecast is good. Is it possible to create a graph that shows the forecast vs past values? What I am ...
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18 views

Do residual vs regressors plot show randomness?

I read that residual vs explanatory variables plots should show randomness. Is the randomness persist in these plots?
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17 views

Why is this log graph not the same as percentage change graph?

From my understanding, log measures relative change, which is the same as what percentages do? Is my understanding faulty? If so, please guide me to the correct one. This is the formula I used to ...
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12 views

How to check the relationship between continuous scalar values and discrete binary labels?

I'm currently working on a machine learning project where I designed a model to perform binary classification given (text) input. What I'm working on right now is to analyze whether the distance ...
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How to get coordinates when only pairwise distances are known? [duplicate]

I have $n$ points with pairwise distances known, $d_{i,j}: 0<i,j<n$. Their coordinates, $\vec{x}_i \in \mathbb{R}^k: 0 <i<n$, are unknown. I can set up $n^2 - n$ equations to solve for ...

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