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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7 views

MANOVA on typed data

I'm wondering whether MANOVA is an appropriate analysis tool for my data. I'm working with a directed network of typed nodes, and I want to see if the type of a node has an effect on the distribution ...
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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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50 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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61 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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41 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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79 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
206 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
14 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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42 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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13 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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29 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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49 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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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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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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27 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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47 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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13 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
33 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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22 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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7 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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21 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
106 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
56 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
25 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
52 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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23 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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23 views

Trying to plot a dummy variable over a dataset

Hy everyone, im new to ds, so please,be kind. i've this dataset ...
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16 views

What is the best way to visualize IE matrix data?

I have this table and I wondering which is the best way to visualize these data? Using the R script below I have managed to produce a simple scatter plot to visualize the ...
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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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6 views

Scale's influence on plotted variables' relationship

Does it matter if the x and y scales are incremented differently across the same physical length of a graph when determining a relationship between variables? I have tried 2 representations (both ...
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1answer
61 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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26 views

Relationship between two numeric variables

I am have been looking over my undergraduate statistics notes about the relationship between two numeric variables, but I am baffled regarding what the relationship this graph is showing? From my ...
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88 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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42 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
48 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
46 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
69 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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… 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
43 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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26 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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109 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
119 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
119 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.
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1answer
106 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
127 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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2answers
41 views

check for noncorrelation of normal pseudo random numbers using scatterplot

pseudo random number generators should give as output random sequences u1, u2, ... that are independent and identically distribuited (iid). Since testing for independence is not easy, the first check ...
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1answer
215 views

Should I do a regression analysis even if the variables do not seem to be associated at all?

One of my hypotheses is that Variable A and B predict Variable C, so I want to perfom regression analyses. My questions for this example: 1) Should I perform two separate simple linear regressions or ...

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