# Questions tagged [data-visualization]

Constructing and interpreting 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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### Bishop Gaussian Basis

In Pattern Recognition and Machine Learning by Christopher Bishop he says in Section 3.3.2 titled Predictive distribution If we used localised basis functions such as Gaussians, then in regions away ...
16 views

### How to preview plots in R Notebook? [closed]

I'm trying to plot a correlogram and periodogram for my dataset in R Notebook, as if I understand correctly, R Notebook offers the feature to preview plots without having to knit unlike R Markdown. ...
674 views

### Visual assessment of scatterplots acceptable?

I have a fairly basic question about analyzing a dataset of measurements taken on a number of fish, which I’m doing as part of a student project. So I have measurements of four species of fish of ...
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### In what instances are 3-D charts appropriate?

All the data analysis-related texts I have read over the years recommend against using three-dimensional charts in almost all cases. To quote one of them, "Never use a 3-D chart when a two-...
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### How to derive points for each variable in nomogram by hand?

I'm dealing with nomograms at this time, but I don't really understand how to derive the exact points for each variable by hand (or in a mathematically way). To be concrete, I brought a simple example:...
1 vote
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### How to visualise the value of one predictor in a multiple linear regression

I'm looking for confirmation on whether the approach I have is statistically correct / straightforward, and if there might be any references supporting this line of thinking on how to visualise ...
68 views

### Interpreting random effect in GAM output: gaussian quantiles

Model runs are fine. Interpreting effects is easier for factors. What is not straight forward are the outputs/plots for variables with factor levels assigned a random effect. The plots I am trying to ...
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1 vote
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### Discrepancy in MSE Cell Frequencies and Entropy Estimation for Various Estimators

I've been trying to replicate the results from the paper "Entropy Inference and the James-Stein Estimator, With Application to Nonlinear Gene Association Networks" in R. The goal is to ...
61 views

### Is It Okay to Scale up Principal Component Analysis Loadings to Fill the Plotting Region When Plotting Principal Component Analysis Scores [duplicate]

I have the following plot, where I've plotted principal component analysis scores. I overlaid the loadings in the plotting region, but they're all very short and you can't see the loadings nor their ...
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### seeking suggestions for visualizing relationships between extracted topics and ratings in R

I have a set of product online reviews data. The dataset contains review text and 1-5 star ratings. I've extracted 5 prevalence topics using R stm package. They are price, design, packaging, promotion ...
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### Plot Hazard ratio, 95% CI with a continous variable

Can R generate some figure like this? x-axis=age(continous), y-axis = hazard ratio for each count? Our dataset: mydata, event=death, time to event=years, var=age, group=treatment(1) vs control(0)
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### False Negative vs False Positive for Multiclass classification

Suppose I have three classes 1,2,3. And there's evaluation like below, where second element is false prediction where model predict class 3 while ground truth is 2. ...
58 views

### How can i make a simple visualization of my result from a two way fixed effects regression model?

I am trying to understand the effect of the variable x1 on the dependent variable y1, and for that i have panel data. I decided to use a two way fixed effects model to estimate the effect of variable ...
36 views

### Representing growth in learning outcomes

The average score of my class of students at the beginning of the year was 50/100 and at the end of the year, it was 80/100. The percentage growth is 60%. Can I write there is 1.6x growth in average ...
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### How to work out the expected rate of success when there is a guaranteed success on the nth attempt?

I'm looking to work out how to find the expected success rate when given the rate of success but, also after n-1 failed attempts, there the success rate is 100% for the nth attempt. Intuitively I ...
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### How to express the uncertainty in the OR of a right-tailed Fisher's exact test?

Many OR (odds ratio) visualizations show 95% confidence intervals expressing uncertainty like on the left panel in figure below. However, in genomic overrepresentation analysis right tailed Fisher ...
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1 vote
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### Best solution was not repeated - no reliable result for metaMDS?

I have abundance data of spiders that I captured in different forest stands and I want to perform an NMDS. It generally works, although the stress value is relatively high. However, I get the message ...
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23 views

### Parallel Mediation Model Diagram

I am building a parallel mediation model diagram but am not sure what one of the numbers signifies despite 30 minutes of Goolging. The number in question is what's in the parenthesis for the c' path —...
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### I want to plot the decision boundaries of an SVM model with more than 2 variables

I understand that that is impossible to visualize, so I went in and PCA-transformed the variables. The problem is that I still need more than 2 principal components to get "good" ...
89 views

### Intro to Stats- professor's mistake in an exercise on types of diagrams?

The Question Parking at a university has become a problem. University administrators are interested in determining the average time it takes students to find a parking spot. An administrator ...
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### In general, does $P(R|N)>P(R)$ implies $P(N|R)>P(N)$ ? Seems to be confirmed by Venn diagrams example but contradiction with Bayes' theorem

Let $R$ and $N$ be two dependent events, such that $P(R|N)>P(R)$. Does this implies that $P(N|R)>P(N)$? The odds are this is true (and equivalently $P(R|N)<P(R)$ implies $P(N|R)<P(N)$). I ...
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### What do people call such a chart with a strip of activity types per time?

What do people call a chart like that below which has days on Y axis and time of the day on X axis while color represents a kind of activity (data gathering, processing, etc.)? It is very close to ...
778 views

### What do people call a chart with a strip of peak values in time intervals?

What do people call a chart like one below which has days on Y axis and time of the day on X axis while color represents the level of some value (for example, loading, usage count, etc.)? The chart ...
23 views

### RDA analysis in R

I'm working with foraminifera diversity in the Arctic on my master thesis. I want to look at how environmental variables are affecting the species variation, so I'm using RDA. This is my code: ...
1 vote
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### Visualizing restricted cubic splines in glm.nb

I am trying to visualize the relationship between a continuous variable ("marker") and a count variable ("count") using a negative binomial regression with a restricted cubic ...
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1 vote
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### Plotting model-adjusted baseline values of change scores

I know using change scores to evaluate a treatment effect on an outcome in an RCT is frowned upon by some. But I'm interested in knowing what people normally do when it comes to plotting the model-...
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1 vote
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### Intensity outliers/anomalies in 2D plot

I wonder what kind of method better to use to see outliers on z value of 2D plot. For example, I have measurements of x and y values both in range of 1 to 16 with step of 1. Next I calculate how many ...
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### What's the best visualization for an accuracy vs. enum list plot?

I have been training my DL model with different permutations of features and have been logging the results. On on column is accuracy, just a scalar float. On ...
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1 vote
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### Event study: Group periods at margins

For an event study (staggered Diff-in-Diff with different treatment periods) I would like to group the periods at the edges so that we get the coefficients for <=x / >=x , such as: For starters,...
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1 vote
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### Why does the Gelman plot of a JAGS model start at 1000?

I am looking at the diagnostics of a Bayesian model using rjags in R. In particular, I am considering its Gelman-Rubin-Brooks plot. Independent of the number of ...
22 views

### How to present the relation between two KPIs

The case is for a logistics company. We are trying to show our users their current emissions and how much emissions they can save/avoid/reduce by choosing more sustainable routing options. On our ...
126 views

### Forest plot to show results in a observational restrospective cohort study

I have to present my study as a poster and, in order to make my results more visual, I thought it was a good idea to report them as a forest plot. However, it is ok to use a forest plot to report the ...
44 views

### Plot linear mixed-effects model results

Background: I am looking at how clinical factors affect disease progression in a longitudinal dataset with a mixed effects linear model where A is the response variable (here, a measure of disease) ...
1 vote
79 views

### What is the best way to visualize relationship between three variables?

I have a data like this: Company Providers Paths A 1 14 B 2 15 C 4 60 D 2 13 The greater the number of providers, the greater the paths. What might be the best way(graphical plots) to present ...
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### Why does factor appear significant in 2-way ANOVA but not by inspection (mean +/- sd or error plot)?

I am puzzled about the result of a 2-way ANOVA analysis. The factors are categorical and non-random and the sum of squares used is constrained type III (the choice of categorical or SS type does not ...
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### Interpreting the Y-axis of a visreg visualizaion of a binominal logistic regression model

This is a long post, apologies for the length. In sum, I just want to know what the Y-axis represents in the below plots. Here's the background: I have a binomial logistic regression model in which ...
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### What kind of chart is this and how to read it?

I came across this chart that is both weird and intriguing. It is about some literary works produced in the regions mentioned. The x axis is the time and y axis the percentage. The preceding para has ...
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### Given variable A and B containing data of lemma sentiments, what is the correct term for the variable containing average of var A and var B?

I have a data visualization, showing the sentiment of two lemmas "гей" (var a) and "трансгендер" (var b) in a news corpus throughout the year. Here is the dataframe sample of my ...
382 views

### Visualization of a mixed effect logistic regression model?

Can you suggest me which graphs I should do to visualize a mixed effects logistic regression model with three fixed predictors (all categorical) and two random intercepts?
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### Representing duration on a map

I have a geographical map of a region, with a few locations of interest on it. For these locations (a dozen - edit: I just counted them, they are actually 25! Sorry for the underestimation), I want to ...
45 views

### How should I visualise uncertainty in a histogram from survey sampling?

I have a numeric variable $\{x_i\}$, which corresponding weights $\{w_i\}$, where the weights are survey weights from a corresponding complex survey design. I want to visualise a weighted histogram of ...
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### experimental evidence for differences in perception on vertical vs. horizontal scales

I am searching for experimental studies, by Cleveland or anyone else, that test differences in the accuracy of quantitative judgements (or related aspects of visual perception) based on whether data ...
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