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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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) ...
biostudent's user avatar
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1 answer
54 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 ...
Shyamkkhadka's user avatar
1 vote
1 answer
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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 ...
Buck Thorn's user avatar
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0 answers
15 views

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 ...
Wangana's user avatar
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10 votes
4 answers
3k views

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 ...
vin's user avatar
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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 ...
pindakazen's user avatar
5 votes
1 answer
209 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?
Katherine's user avatar
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0 answers
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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 ...
Darfo's user avatar
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1 vote
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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 ...
Alex J's user avatar
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2 votes
0 answers
45 views

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 ...
Ben Bolker's user avatar
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4 votes
1 answer
68 views

Alternatives to population pyramids

In a comment thread relative to another question, Nick Cox says: Population pyramids are over-rated. Subtle shifts in the ratio females to males, or its reciprocal, are important and common and ...
Coris's user avatar
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3 votes
3 answers
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Which error bars to use when comparing only two subjects when many replicates?

I want to plot discrete time measurements made for two subjects, but where many cells were observed for each subject in triplicate. I think the experimental unit is the subject, so I should just get a ...
maglorismyspiritanimal's user avatar
19 votes
4 answers
2k views

Are there situations where a vertical bar chart is preferable to a horizontal one?

I hardly see what kind of advantage a vertical bar chart could have over a horizontal one (edit: by "horizontal bar chart", I mean a chart with bars oriented horizontally). On the other hand,...
Coris's user avatar
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8 votes
3 answers
901 views

Are these valid histograms?

My friend asked me about histograms and sent me some examples given by their teachers and in the textbook. It is not like the histograms that I've learned at all. I was taught that the quantity ...
Michael Liu's user avatar
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0 answers
25 views

Effectively Visualizing P-value Distributions with Excessive 1.0 Values

I'm dealing with a discrete statistical test scenario where a significant portion of the P-values calculated are exactly 1.0, due to the nature of the test statistic not exceeding its observed value ...
irahorecka's user avatar
4 votes
1 answer
58 views

LOESS using predicted means from a linear mixed model

What aspects do I need to consider when plotting a smooth curve with the LOESS method (geom_smooth) using predicted means from a linear mixed model? My data consists of longitudinal psychological ...
ACOM's user avatar
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3 votes
0 answers
25 views

How to visualise and analyse two aphid species direction facing based on orientation of a plant in relation to gravity

I've performed an experiment looking at whether the orientation a plant is held in (upright, sideways or downwards) will effect the behaviour of two aphid species (S. avenae and M. dirhodum) on ...
A-okay's user avatar
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0 answers
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Gap in Partial Residuals Plot for Logistic Regression Model

I'm working on a logistic regression model using R with a binary outcome (prescribed DPP-4 inhibitors or other drugs) and several predictors. My model is specified as follows: ...
jos0909's user avatar
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3 votes
3 answers
379 views

Gaps in a histogram in sampling distribution

This histogram shows the sampling distribution of 5000 sample proportions each based on 50 persons. Why are there gaps between the bars in the histogram?
Happy Cretine's user avatar
2 votes
1 answer
38 views

How to interpret the plots of smooths from a GAM object

I am reading a text which is trying to demonstrate that enabling the select = TRUE option in the GAM function doesn't get rid of all the non-significant variables ...
Actuarial_student's user avatar
1 vote
1 answer
89 views

Logarithmic scale use cases

Is it fine to use logarithmic scale with bar charts? (I guess I depends on a specific case, like using the logarithmic scale anywhere else). I have done so in a Power BI report when comparing each ...
justm-c's user avatar
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0 answers
40 views

Review of Partial Dependence Plot

I have created a partial dependence plot and converted a probability on the y axis. I am systematically going over my variables with the highest importance and see if there are some clear trends in ...
John Gallop's user avatar
1 vote
0 answers
46 views

Calculation Interaction Effects, Plot of Fixed Effects Model with interaction terms

I'm working with panel data using the plm package in R to estimate a fixed effects model that includes interaction terms. I'm currently able to get my model results using plm and display them with ...
Kati's user avatar
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0 votes
1 answer
26 views

Predicted circular regression curve from a bpnr regression

I'm trying to understant how to interpretresults from the bpnreg package to do glm on a circular response variable (flight directions). I understood from the paper that the interpretation can be done ...
Tanuki's user avatar
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0 answers
15 views

Error Bars for Incidence of a Rare Medical Complication

I am making a plot of the incidence of a medical complication by the drug dose used. The incidence is very small, and so I am getting huge error bars using standard deviation-based methods, even ...
Micah's user avatar
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10 votes
3 answers
1k views

Why does creation of a Q–Q plot in Excel need an adjustment by 0.5?

I am aware that different statistical packages provide Q–Q plots using code or via a black box. For example, minitab with R integration for Q–Q plot from here. I am trying to do this manually via ...
Tryer's user avatar
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0 votes
2 answers
26 views

Why is the correlation coefficient of these subsections of this dataset indicating a much weaker correlation than the whole dataset?

I have a dataset which includes household income against expenditure. The correlation coefficient of the dataset is 0.7064 which indicates a strong positive correlation. Here's a graph for it: Now I ...
Marmaduke Bonthrop Shelmerdine's user avatar
1 vote
0 answers
16 views

Drawing error bars on a position vs time chart where st. dev. is for vectors and not total position

I have the following data for a position versus time analysis. Note that the total distance is just the sum of the mean vector distances. I want to show the error bars on a chart of total distance vs ...
rdemyan's user avatar
  • 11
5 votes
2 answers
253 views

GAM plot in R for "by = factor" [closed]

I have a dataset of dolphin encounters (count data) which are segregated by "type" of detection of an event (acoustic, visual, mix). I ran a GAMM to test the effect of environmental ...
Isha B's user avatar
  • 163
8 votes
2 answers
182 views

Best plot in R for count data with a broad range and lots of low frequency data

I have a data set that looks like this, in reality there are about twenty categories with a count of 1: ...
tacrolimus's user avatar
5 votes
1 answer
98 views

"Famous" set of correlation plots used for teaching

I am familiar with Anscombe's quartet I am now looking for a different set of plots. From what I remember, these all had correlations of zero, and there was a question here on CV, and I think it was ...
camhsdoc's user avatar
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1 vote
0 answers
47 views

Plotting 3 points per data set in lollipop-type chart [closed]

I am wanting to plot a graph where I have multiple data points per category of data. For some context, I have done some analysis on different samples and now have up to 3 3 data points for each sample ...
Charllotte's user avatar
4 votes
1 answer
73 views

How to interpret and visualise output from lmer model r?

I have data from 310 individual plants, from various habitats (5 type), species (10) occuring in different habitats, measured photosynthesis performance (PhiPS2) in different months (sampling_no_). I ...
scholar101's user avatar
1 vote
0 answers
16 views

Data Visualization and Interpretation in Segmented Regression Analysis

In the course of my research, I am examining the interplay between age, morningness-eveningness, and sex-specific trajectories. Initially, for a holistic overview, I generated a scatterplot featuring ...
Penguin's user avatar
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1 vote
1 answer
232 views

How to interpret pairplots()

I have been working on a Classification problem. And I want to see how many features associate with the target variables. Let me share an example. I got this pairplot using ...
letdatado's user avatar
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3 votes
0 answers
61 views

Colorblind aware Red and Blue

When plottling discrete data I tend to use some colorblind palette, even though I am not affected myself. Now I want to plot hearing test data. There is a general (i.e., international) understanding, ...
Bernhard's user avatar
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8 votes
1 answer
144 views

Can you tell if a linear regression slope is significant just by plotting its confidence interval?

When doing a hypothesis test for whether some value $a$ is significantly different from some other value $b$, if the confidence interval for $a$ contains $b$, then we cannot reject the null hypothesis ...
Benedict Clarkson's user avatar
0 votes
0 answers
20 views

Can the Log of PR AUC curve plot be any useful?

I was doing some tests regarding my PR curve for 2 different models (first image), and I got the idea of ploting the log of those curves (second image) to see if there were any insights that I could ...
GabrielPast's user avatar
6 votes
1 answer
369 views

Name of academic field studying geometric structure of data sets [closed]

I have questions about the geometric structure of data sets, esp. as it relates to the relationships between predictors. Is there a name for this field?
Chris Science's user avatar
1 vote
0 answers
19 views

Applying Tangent Lines to Log-Scaled Data for Outlier Detection: Seeking Statistical Theories and Models

I've analyzed the view counts for a YouTube channel's videos (just for example), sorting them by views (on the left) and drawing a tangent line to approximate the central trend on a logarithmic scale (...
Andrew Anderson's user avatar
0 votes
0 answers
28 views

How to graphically represent a Probit regression after weighting using propensity scores in R?

So I have a Probit model that uses weights w, which I got from propensity scores, but I can't find any information on how to represent the Weighted Probit regression. All the information I could find ...
Google Account's user avatar
1 vote
0 answers
133 views

Applying PCA to Time-Series Emotional Data: Validity and Interpretation Concerns

I'm currently exploring the application of Principal Component Analysis (PCA) to time-series data representing various "facial emotional expression" states (e.g., anger, happiness, sadness, ...
AltunE's user avatar
  • 111
4 votes
1 answer
197 views

Does it make sense to fit linear regression on single-case studies?

Just on principle, do you think it would make sense to make linear regression models for each individual in a study and treat replicates as data points? I don't mean reporting p-values or anything ...
maglorismyspiritanimal's user avatar
0 votes
0 answers
35 views

How would you interpret a jagged continually increasing silhouette plot for k-means cluster analysis?

I am running a k-means cluster analysis of textual data (k = 750) and the following is the plot of the silhouette score by cluster I am trying to decide optimal k and I'm wondering how one would ...
osckt's user avatar
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0 votes
0 answers
37 views

Check linearity Residual vs Fitted Chart

I have a question about one of the simple linear regression test graphs. Looking at the graph it apparently appears to be linear but this curve is causing me a lot of doubt, I did another test that I ...
user avatar
0 votes
0 answers
14 views

Which analysis should i use for group classification?

I have done this PCA analysis and found the score values. Now I want to do another analysis on this data to see that PC loaded in which "Region" (column 1). Now used a NMDS plot using Bray-...
user401076's user avatar
1 vote
1 answer
89 views

Visualization of data when more than two fields should be represented (two of them time related)

I have some data with some relations which I would want to visualize. Background The data I have has the following fields: Current value: CV Value in 50 seconds: V50 Predicted Future (50s) Feature: ...
KansaiRobot's user avatar
3 votes
2 answers
176 views

Effects package for plotting mixed models - what does it do?

I am trying to plot fixed effects of $X_1$ and $X_2$ from my lmer model. I'm having trouble understanding the theory behind it: ...
Questioning's user avatar
2 votes
1 answer
77 views

GARCH diagnostics via standardized residuals: interpreting my findings

I have fit a GARCH(1,) model in Python, assuming the residuals are $t$ distributed. I am checking the standardized residuals. ARCH and Ljung-Box tests don't reject the null hypothesis. However, I am ...
Mattia's user avatar
  • 121
2 votes
1 answer
89 views

My dataset includes multiple variable and all of these variables have sub-variables. How to visualise & test which segment is significant?

So, I have survey responses from users. Just to make it clear, if you select an issue like Poor UI then you are prompted with 4-5 specific issues about the UI to select from. Poor UI is the main ...
doodle2611's user avatar

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