Questions tagged [scatterplot]

Pairs of (x,y) values plotted as points in Cartesian coordinates. Widely used as an exploratory and diagnostic tool.

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16 views

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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1answer
38 views

Downward slope but Spearman correlation coefficient is positive and vice versa

Why the slope and the Rho value not the same? For examples, graph H-DSI shows downward slope but the Rho value is positive (P value=0.9603; r=0.009867). Hope someone can explain it. Thank you. H DSI ...
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18 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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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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15 views

Find the best ratio to distribute a budget using historical data

I have a data set which shows the historical data of a company's employ satisfaction against the budget they spend on different employ motivation schemes. Quarter Scheme 1 Budget Scheme 2 Budget ...
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31 views

How to plot a poisson model with offset?

I fitted a glm poisson with an offset term (in R) to my data and found a relationship between predictor and response variable. Now I would like to create a scatterplot with my original data in ...
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1answer
41 views

How to interpret this scatter plot?

I am simulating a population of binary stars by generating many samples of orbital parameters. I'm investigating the relationship between the inclination of the orbit and the fraction of the ...
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17 views

How do I draw polygons in a scatterplot around groups of points based on a factor other than the factor my colors are based on? [closed]

I pasted the data here: The dataframe contains multiple observations on x and y per country. Each country is also part of a region. Based on this post, I managed to draw ploygons/clusters in the ...
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10 views

Comparison of several groups of a scatterplot

I have a dataframe: ...
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26 views

Online stats teaching question

In the spirit of some exercises of Gelman's book on teaching statistics, I want to incorporate some more interactive elements to the zoom classes I teach. One exercise I want to implement is the ...
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16 views

Where can I find source for learning EDA?

In the post (What is the relationship between $Y$ and $X$ in this plot?), I find it's quite interesting to know more deeply about the data rather than just choosing model. In that post, the scatter ...
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24 views

Visualising a standard multiple regression

I am running a standard multiple regression for my research project. I have 4 predictor variables trying to predict one outcome variable. I've run the analysis in SPSS but Im not sure how I can ...
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13 views

Find skewness and kurtosis of a bivariate scatterplot

I was reading this paper in the medical field which proposes a method using two radiological parameters in order to distinguish benign and malignant lesions. In their paper the Authors show this plot ...
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1answer
29 views

Sampling the inside of a curve [closed]

Suppose I have a set of points $S$ in the plane, which defines a curve in a discretized fashion. This could be $3\cdot 10^3$ points on the unit circle: But also could be $3\cdot 10^3$ points ...
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23 views

Is it a line graph if it has no lines?

I'm trying to find the correct terminology for the default plt.plot() method from Python's matplotlib. It appears to behave like ...
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12 views

Good measures to quantify the effect of outliers

I have two random quantities linked to a set of N random variables. Increasing N The two random quantities should gradually become similar (meaning that the 2 distributions narrows around the same ...
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19 views

How do I find a threshold to minimise some values? Relevant graph included

I am trying to solve two sub problems based on this graph. My overarching problem is to predict the coordinates of a point, and give a confidence to the prediction. The y-axis is kind of arbitrary, ...
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1answer
44 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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66 views

Heteroscedasticity: When is it OK?

The point of the last analysis in my paper was to check on the basis of which predictor variables the answers to moral dilemmas can be explained. Predictor variables are continuous: dark personality ...
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4answers
119 views

How to visualise data where one variable is continuous and the other is categorical?

This question is very simple but I have been struggling in getting the right script for this. My data set goes as follows: ...
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70 views

Does this scatter plot suggest non-linearity?

As part of assumption testing for ordinary least squares (OLS), I am examining the linearity between the variables in my model. I'm using scatterplots between the independent variables (IVs) and ...
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113 views

Correct or incorrect interpretation of scatter plots: a comparison among the Pearson, Spearman and Kendall correlations

Cross-reference overlapping question: "Interpretation of a scatter plot: an unclear correlation" I have 3 scatter plots, where 3 variables are plotted against each other as follows: Plot 1: ...
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1answer
318 views

Interpretation of a scatter plot: an unclear correlation

Cross-reference overlapping question: "Correct or incorrect interpretation of scatter plots: a comparison among the Pearson, Spearman and Kendall correlations" I have this scatter plot ...
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4answers
553 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
24 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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177 views

How to use a scatter plot to detect non-linear co-dependence between two variables?

A scatter plot matrix of 3 time series (financial returns data) are shown below. It is a multivariate representation of a scatter plot, with the individual pairs shown in the off-diagonals. The ...
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147 views

Relationship between Histogram , Scatter plot , Normality , Linearity

I have the following doubt: suppose you have a categorical variable called 'neighborhood' with 20 categorical levels/values ("vila madalena", "mooca", etc). and I want to check ...
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16 views

Inferring r2 and pvalues in a scatterplot between observed and modelled values

I have a dataframe, consisting of modelled and MODIS observed data. The values represent mean GPP for the year 2000,2001,2002,2003 .. till 2010. ...
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28 views

Inferring $R^2$ from scatterplot visualization

I have two dataframes (modelled and observed) each representing values of mean NPP for the years 2000,2001,2002....till 2010 ...
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102 views

Meaning? In logistic regression, testing "linearly related to log odds" results in a perfect 45 deg line, not a scatter plot

Running glm(Cond1 ~ Level, data = Data1, family="binomial") , I'm testing the assumption that B is linearly related to the log odds. I'm getting a ...
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45 views

Deducing information from a scatterplot

I have two tiff files in R (one modelled and one observed). Both tiffs show the spatial maps of gross primary productivity from 2000-2010. The study area is HinduKush Himalaya (http://rds.icimod.org/...
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1answer
68 views

Data Visualization - how to display error of a color scale?

I've been turning this around in my head and I think the answer is to ultimately tabulate the data, but it's an interesting question so I'll still post it. I have three sets of data of equal length. ...
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24 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 ...
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1answer
23 views

Explaination behind the relation between the correlataion coefficient and distance of a typical point from the standard deviation line

I am reading a textbook on statists by Freedman, Pisani, and Purves. In one of the chapters about correlation between two variables, it is given that the vertical distance of a typical point from the ...
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1answer
260 views

Can a 4D perceptron be plotted in 2 dimensions?

I am wondering if it is at all possible to plot a 4D perceptron line in 2D. Obviously, it would be impossible to observe it with all of its original information, but is there a way for me to observe ...
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3answers
155 views

Is it possible to detect outliers in two related columns [duplicate]

I have pandas data frame which has some related columns, like let's say I have a column that showing housing sale prices and other column shows total area of that house. If I look for outliers alone ...
3
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1answer
26 views

Help on understanding these plots

I am very weak in the english language and I need to understand how I can describe my plots. It's the best way for me to learn, understand plots and memorize the phrases. So my first question is, ...
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1answer
90 views

What do the class-specific numbers mean in this scatter plot matrix? (Made using the R function ggpairs)

I found some code online that uses the ggpairs() function from R to draw a scatter plot matrix for the famous iris dataset. ...
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29 views

can a linear classifier based on two variables separate a dummy variable?

i have this problem : as you can see, on the x-axis there is the variable age and on y-axis there is the wkswrkd which is ...
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1answer
28 views

Explanation of plot() function in R [closed]

I am trying to plot two variables x,y by running the script below ...
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1answer
78 views

Problematic residual plot

I have created a linear model in R, and then plotted the residuals. If my residual plot looks like this, then which model assumptions are not appropriate?
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264 views

Statistical test for scatter plot

Hello, I have a graph where I have plotted some values in the four quadrants. I want to show that the number of points in the 3rd quadrant is more than the rest, not just by random chance. What kind ...
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0answers
60 views

How to plot categories after clustering

I am trying to plot the categories I have obtained via DBSCAN on a 30-dimensional dataset 12 categories, and I want to visualize them in a 2d plot. My procedure was to reduce that 30-dimensional ...
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1answer
61 views

In making scatterplot for correlations between two continuous variables, can we use the choice cubic instead of linear choice [closed]

In making scatterplot for correlations between two continuous variables, can we use the choice cubic instead of linear choice in "create a fit line at total", as shown in the copied Figure, please? ...
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3answers
66 views

Rationale for elliptical region of correlations in gene expression data

I am analysing an RNA seq data set and I am trying to look at correlation between expression values of significant genes in 4 different biological duplicates and their clinical parameters. Here, I ...
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1answer
96 views

Graphing a fit line through existing scatter plot [closed]

I've got a scatter plot of two continuous variables and they are labelled 0 or 1 depending on a third binary variable. I would like to draw a fit line through the 0's and the 1's on my scatter plot. ...
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30 views

... This is random, right? [closed]

The X and Y axis are predictor variables, and the response is 1 (the + sign) or 0 (the circles). I shouldn't explore this further, right? There's no way to predict for 1's?
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1answer
54 views

Determining which variable is the cause and which one is the effect

I'm working on my assignment and I'm a bit lost. So the assignment requires us to draw a scatter plot based on data that we collected online. The purpose of the assignment is to see if higher earnings ...
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0answers
47 views

Finding Patterns In a 3D Plot

I am starting to use 3D graphs to visualize relationships in my data. The reason I am doing this is to try and maximize my predictor variables. Since I am working with financial data the relationships ...
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0answers
220 views

How can I make a scatterplot with two grouping variables (group and subgroup)? [closed]

I'd like to make a scatterplot with my dependent variable (scores on test A) on the y-axis, age (continuous) on the x-as and group (autism vs. control) as grouping variable, but also subgroup (people ...

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