# 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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40 views

### Figuring out skewness from a boxplot

How do you define the skewness in this case? My understanding is exactly the opposite from what I have read. What I have read As the box plot is towards the lower end it is rightly skewed. and it will ...
17 views

### For a box-plot , given the min, max , q1 and q2 is it possible to find the median and the mean without being given the sample size

For a box-plot, given the min, max, q1 and q3 is it possible to find the median and the mean without being given the sample size.
78 views

### What's the meaning of “frequency represents area of bars” in histogram?

In some statistics lessons, I have heard that frequency represents area of bars. So I was curious and plotted these numbers: [1, 2, 1, 3, 3, 4, 5, 1, 4, 6, 7, 3, 7, 5, 7, 2, 8, 9, 10, 8, 10] The ...
16 views

### What is the best program for simple data visualization, especially for “boolean” operators/simple correlations?

I would like to preface this by saying I have no prior statistics or datviz experience so please forgive me for not knowing all the correct terminology. The project I am working on is just for fun and ...
6 views

### Tools to store & visualize larger quantities of data with many permutations?

I have a lot of data coming in with high number of permutations, like: duration,date,country,other configuration data that's specific to use case I want to create counts by permutation and visualize ...
14 views

### Compute standard-error/deviation for an aggregated/ fractional metric

I have a dataset, where I want to visualize an aggregated efficiency over time (t), while also showing the variation/ uncertainty in the data. The target metric is computed as the fraction of the ...
14 views

### How to analyze the data set

I have a data set with all the zip codes in a city Texas, and the number of stores each zip code has. So on excel, it looks like following: Column A (list of all the zip codes) 22160 etc; Column B (...
34 views

### How do I interpret this dot chart? [duplicate]

I got this as a result (I can provide more information about the data itself if you would like it). I was curious about how one should interpret this chart that was created in R. I understand it has ...
21 views

### visualizing the scatterness of higher dimensional data using python

I have a set of unlabeled data $x \in \mathbb R^n$, and I want to visualize how scattered those points are using python. In dimension 2, we can just use plt.scatter which is quite straightforward. I ...
10 views

### Change measure results depending on a slicer using Power BI [migrated]

I'm making a report using Power BI. The data that I'll show is the commulative ammount of a turnover. Inside the data source I've this data. ...
21 views

### maximum Corelation coefficient - how the numarator and denominator becomes equal?

Pearsons corelation coefficient is defined as follows $$r_{x,y} =\frac {\sum (x_i -\bar X)(y_i - \bar Y)}{\sqrt{\sum(x_i-\bar X)^2} \sqrt{\sum(y_i-\bar Y)^2}}$$. Now, maximum magnitude of a ...
13 views

### Visualize two usually-identical timeseries distributions

I have two timeseries distributions: you can basically consider them as new tasks and completed tasks. In the standard case, you ...
27 views

### Interpretation of Residuals vs Fitted [Regression]

Hi there, I tried to interpret and evaluate the given plot. Most statistic-books say that if homoscedasticity in regression models is present, it would be recognizable through a triangle-shape in a ...
42 views

### What graphs / plots are best suited to visualise percentiles?

I have Year 12 final exam rank of students which is a percentile and information on if they graduated or not. For these 2 classes I want to visualise Year 12 PERCENTILES. Is a histogram suited for ...
11 views

### All of my AU-PRC values are the same, is there something wrong with my code or models?

I have been doing some training of basic models for a certain binary outcome, and most of the training has been on optimizing the AUC. But when I plot the precision recall curves, I get essentially ...
18 views

### Which is the best comparison method to analyze these data-sets?

I need help on the best approach to perform statistical analysis to find out if there are any discrepancies in these data-sets for my students (for five independent years - with each year representing ...
21 views

### How to interpret the outcome of the scatterplot

I wanted to see what is the relation between two variables using scatterplot in r. The outcome can be seen as below. My question is how to interpret this plot. Yes, the two variables are highly ...
98 views

### How can i find empirical survival function using survival function in R?

The survival function is given by: S(y; α, λ) = (α/α−1)* (1 − α^(−e^(−λy ))), if α is not equal 1 = e^(−λy) if α =1 y = 1 4 4 7 11 13 15 15 17 18 19 19 20 20 ...
100 views

### Non-parametric (smoothed) estimate of current rate

I am looking at time-series event data and need to visualize how the arrival rate $\lambda$ changes over time. I do not want to assume any underlying distribution that the data comes from (it is ...
20 views

### Expected Covariance from Graph Traversal

I have a problem in which I am interested in taking a matrix of positive integer weights, including zero, where the matrix has dimensions nrow x ncol and the columns always sum to the same arbitrary ...
12 views

### How to plot an interaction from a Negative Binomial model?

I used a negative binomial model to test the effect of 2 variables (1 binary categorical variable and 1 continuous variable) and a count response variable. I also added their interaction to the model. ...
18 views

### Interpretation of permutest in relation to plot in R

I used permtest.betadispers function from the vegan package to test whether or not the within-group variance is statistically different amongst 4 groups. The p-value of permutest < 0.05 ---> the ...
29 views

### plot more than 2 PCAs in 2D in R

I have done a PCA analysis where 7 PCAs explain about 80% of cumulative variation in the data. I would like to plot the scores for all 7 PCAs in R but not sure on how to achieve it. When I use biplot ...
52 views

### Non-parametric Correlation with a Right-Skewed Likert-type Ordinal Variable

This is my first question on the site, so please feel free to advise if I'm doing anything wrong/give any tips that might make my future questions more palatable to the community. Many thanks! I am ...
21 views

### Plotting categorical data along with numerical variable

I have data like as shown below I would like to represent the above tabular data in a visual form. However, the below graph may not work because my real data as 50K unique drug names. Doing so, will ...
14 views

### Visualising mixed model with only random slopes?

How can I visualize a mixed model with random slopes for a variable but no fixed effect for that variable in a simple model such as y ~ 1 + (var | subject)?
11 views

### Explaining cluster by original variables

I have high-dimensional data on observations of individuals. To simplify and visualize the problem let's assume I have the probability of a positive reaction to 10different marketing campaigns of 8 ...
21 views

### Circular confidence intervals about scatter points [closed]

I'm wondering if this is a "thing", I quite like the visual and feel it would be nice to know how much the points are likely to move from the location given by the data. The following plot ...
28 views

### visreg visualization of GAM results (mgcv package)

How do I plot the generalised additive model using visreg? I have tried with the following code but it does not work and I am unsure how to specify it correctly. I have looked at visreg visualization ...
11 views

### Oscillation in number of deaths by coronavirus [duplicate]

Looking the graphs that report the number of deaths by coronavirus in worldometer, I have noticed that for many countries there is a clear oscillation with a one week period. See for example the graph ...
19 views

### Plot the probability (success) of a binary variable from coefficients of a GLMM?

I have developed a GLMM (Mixed Generalized Linear Model), as you can see in more detail [here] (Is it correct to evaluate differences of a binary variable between different places with a GLMM?) ...
21 views

### 3D copula contour plot with original margins

I have a data follows one copula dependency pattern. I would like to interpret the plot. I always thought that for PDF, CDF or contour plot of the copula, we only can plot the values of the copula (...
17 views

### What do the score values of a principal component mean?

In PCA plots, the values of the scores seem to be usually in the range of [-2,2] or so. For example, here they range from about [-0.5,+0.5] Interpretation of biplots in principal components analysis ...
9 views

### Crossing categorical features that are stored as integers

Newbie here. I'm experimenting with the following dataset: https://archive.ics.uci.edu/ml/datasets/Teaching+Assistant+Evaluation Data Set Information: The data consist of evaluations of teaching ...
67 views

### How can I plot presence/absence data on a time series?

I have some schedule data in the following format ...
24 views

### How to transform data in order to visualize it with my own drawing software?

I want to build my own data visualization toolset using Blender3D and Python. Let's think of a racing bar chart. As a dataset, I have 'google search frequencies of 10 keywords over a period of 10 ...
62 views

### How to plot quadratic model? [closed]

I have fit a polynomial glm in R with x and x^2 as the predictor of interest. ...
33 views

### Plot of prediction by ARIMA model [closed]

After fitting an ARIMA model to data, how can we plot the predicted value plus the original observation in one figure? ...
112 views

### Is there any consensus or literature on the proportion of font parameters within plots?

This is now about how to make a plot, though that is the information that I'm finding when trying to search for an answer to my question. What I'm wondering, is whether there are any thoughts/...
21 views

### Interpreting multiple line plot

I am writing a thesis about predicting different series in the FRED-MD database. Before estimating the proposed model, I make the following line plot in R , it presents how the variables in the first ...
22 views

### Which data visualization when running GLMM?

I'm analysing correct response rate and response time of participants on a task. For the first one, I ran a mixed effect logistic regression: ...
41 views

### How to explain a Box Plot?

Assuming that I'm able to augment their knowledge about boxplot I can give the below insights for box plot ...
22 views

### Visualising multiple data sets containing progressive elements using R

I have two datasets which I will like to visualise together. I'm not sure the best way to visualise the data. I have tried barchart in R which didn't work due to the nature of the datasets. early_data:...
22 views

### Comparison Circles algorithm in Python

My goal is to visually represent similarities between groups using the comparison circles algorithm described here: https://docs.tibco.com/pub/sfire-analyst/7.10.1/doc/html/en-US/TIB_sfire-...
41 views

### Which statistical tests should I use for this data?

I have been given data from Kickstarter ( Kickstarter is a crowd funding platform that helps people garner funds for their business ideas). The data has about 15,000 rows and about 10 - 15 columns. ...
34 views

### How can you know that result of auto.arima is accurate?

I’m using auto.arima and forecast package to forecast the COVID-19 dataset. I got my results and graphed them in R. As I’m no statistician, I read many papers available online related to COVID-19 and ...
23 views

### How to graph multiple variables

I've been tasked with the challenge of creating ONE singular plot that entails a multitude of relevant given data. There is one dependent variable vs three independent continuous variables, an ...
91 views

### Calculating the Mean of an Ordinal Variable Question

I have distributed and analyzed a survey regarding teaching quality. For some of the questions, I ask how often a given teaching method is used. When doing this I ask them to select one of the ...