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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24 views

Does a scatter plot have 2 domains? [closed]

When it comes to graphs, I am used to "range" means the Y axis value that is a product of a function acting on values in the X axis domain. Do I refer to both axes of a 2D scatter plot as ...
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11 views

Data visualisation and exploration for count data

I have a fairly large data set with ~1000 observations about residents of an area. This is a dataset consisting of 15 variables, of various types (eg age, sex, income, years spent living in the area ...
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12 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
27 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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22 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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18 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
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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52 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
103 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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0answers
64 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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66 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
106 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
278 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
21 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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44 views

Using Mean Squared Error as a metric for evaluation

Below is a scatter chart that displays two data sets. the blue data set are observed(actual) location coordinates of detected small cars on a world plane. The orange data set represent the same ...
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15 views

Acceptable average difference value for scientific literature?

I have two instruments that measure the same parameter, I'll call them 1 and 2. 1 is calibrated and zeroed during the study and 2 is not calibrated and zeroed so the baseline values are all over the ...
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78 views

Interpretation of scatter plot - vertical line patter spotted

can I please get quick help on this scatter plot of standardised residuals against predicted values. Does this mean this violated normality, linearity and homogeneity? How should I interpret that ...
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101 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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15 views

Need help interpreting relationship correlation and covariance with scatter plot

I'm having a bit of trouble interpreting this data. The correlation is very low and I'm assuming that covariance is low given the equation Cor(x,y) = Cov(x,y)/Sd(x)Sd(y). Although, the scatter plots ...
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86 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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0answers
65 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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14 views

Homoeodascity and Lineaity [duplicate]

Have my linearity and Homoscedasticity assumptions been met?
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44 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
39 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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23 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
19 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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26 views

Variabile importance in cluster analysis

I need to find out which variables matter the most in a cluster analysis. I've used k-means on my dataset and, according to elbow method, I choose K = 2. Then I used a pair plot of the variables to ...
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1answer
159 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
64 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 ...
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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
66 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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24 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
27 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
67 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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153 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
49 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
49 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
48 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
77 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
46 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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34 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
159 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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1answer
162 views

Interpretation of scatterplot of rank of variables

I am unsure how to interpret the second of two scatterplots I created. The first scatterplot shows a slight negative correlation between the variables (n=14, population not sample). This ...
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1answer
156 views

Relationship between the variable on X-axis with the one on Y-axis

I have two graphs here and I would like to know if there is a relationship between the variable on X-axis with the one on Y-axis of each of the graphs.
4
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1answer
107 views

How to eliminate the influence of heteroscedasticity

As I want to find an approximately linear relationship between $x$ and $y$, how to transform this scatter plot with heteroscedasticity into an approximately linear model? If this cannot be ...
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3answers
130 views

What can I do to improve this plot to get a better idea of what the correlation is like in my data?

In R I've typed the following code to get my scatterplots but the plots are all very bunched up: ...

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