# 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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535 views

### Making sense of PCA and t-SNE representations

I am wondering what (qualitative) sense one can make from PCA and t-SNE plots of weights in a neural network. I'm training a neural network that regresses five different control values, including a ...
41 views

### Scatterplot dovetailing?

I have modeled counts of health factors at the census tract level geography. When I plot these counts against each other (example: smoking vs. heavy drinking) I get a weird scatterplot output. The ...
50 views

### Fitting an interpolating spline to show mean of interaction on cloud plot

I am surprised to not be able to find a straight forward answer to my scenario. I have created a series of mixed effects models using lme4. I am trying to plot the data in ...
3k views

### How do I know what side is skewed? [duplicate]

If I look at a quantile plot comparing normal distribution and other data, and some of the points lie below or above the line, how do I know what that represents? What I am asking is - how do I know ...
356 views

### What is the difference between a Lag plot and a Poincare plot?

So I recently came across Poincaré plots (Wiki) which plots x(t) against x(t+1). Thereafter I found out about lag plots (Description)which seem to do the same thing just the other way around, i.e. x(t)...
569 views

### Researching non-linear correlations through scatter matrix

I am trying to understand the correlations among three explanatory variables of commercials and response variable sales through the scatter plot matrix. It seems like there are non linear ...
419 views

### How to Draw an Ellipse around a Specific Portion of a Probability Density Function

I currently have a 2D probability density function and need to draw a 2D ellipse that circumscribes 50% of the probability "mass" (if that is the right terminology). I see lots of articles on how to ...
3k views

### What are the axes of a t-SNE scatterplot? [duplicate]

What do the values in the x axis and y axis of this scatterplot correspond to? It is related to t-SNE but I don't know how. The plot is from: Lingren T, Chen P, Bochenek J, Doshi-Velez F, ...
4k views

### Why jitter continuous value in a scatterplot?

I'm using Orange Canvas and I generated a scatter plot. I have the possibility to jitter continuous variables but I really don't know why would I do that. What's the idea behind jittering?
799 views

### Solution to force a polynomial curve to end at a specific location

I require a solution (Python if possible) to force a polynomial to end at a specific point. I have read the solutions offered here to a similar question but have been unable to get any of these ...
779 views

### How to interpret linear regression in scatter plot

I am trying to understand the relationship between $2$ variables in $4$ different subgroups. I would like to decide if the variables are correlated in a different way depending on the subgroup. For ...
257 views

### Can we select features by examining scatterplots?

Suppose, I have a data set with eight features in my hand. I want to find features to predict the diamonds, hearts, clubs, spades. ...
154 views

### Fit a regression model to the data

A scatter plot is drawn to represent the relationship between response variable y and the predictor variables ‘x’, which is continuous and the indicator variable z which encodes the membership of ...
798 views

### Interpreting a scatter plot of ranks with a particular structure

I am conducting correlation analysis on variables that I cannot assume to be normally distributed, so I am using Spearman's rank correlation instead of Pearson's. The two variables do not seem to be ...
128 views

### annotate a bubble chart

Is there a proper or ideal way to annotate a bubble chart outside of what is required for a standard 2-variale scatterplot? The bubble area is supposed to be associated with the 3rd variable, but ...
750 views

### Generating scatter plot before doing the Spearman's rho

Do I have to generate a scatter plot to check for the monotonic relationship between two ordinal variables before carrying out the Spearman's rho? And how can I interpret this scatter plot? I ...
749 views

### Plotting a frequency distribution with count and score (precision) for the frequenct

I have a dataset of a million documents. I took the frequency distribution of the documents based on the number of words in it. I also have the precision results for each document. Now I want to show ...
55 views

164 views

### Which version of the Tukey mean-difference plot is more convenient?

I have a single parameter measured by two methods: A and B. I need to see how these two methods compare against each other, so ...
178 views

### Fit circle of fixed diameter over most dense area of scatterplot [closed]

I am looking for a function that would help make a circle (of fixed diameter) over the most data points (highest density) on a two-dimensional scatter plot. I was hoping someone would at least point ...
711 views

### Does this residual plot indicate heteroscedasticity?

These are two versions of the same residual plot, just with a different scales, (I'm not sure which is easier to interpret so I included both). I don't need to know major details (for the assignment ...
877 views

### Using a zero slope coefficient predictor variable in multiple regression

I ran multiple regression with three predictor variables, which according to the theory I am using, should all predict the dependent variable. However, one of the variable's partial plot shows what ...
552 views

### Given a scatterplot, is it possible to determine the probability that a new data point will land in a certain region of the graph?

I was asked to determine the probability of a new data point landing in a certain rectangular region on the graph given other data points that make up the scatterplot. If that is not possible, is it ...
3k views

### What is the point of lag plots and autocorrelation plots?

Most people seem to argue that lag plots and autocorrelation plots are useful for determining whether some univariate time series data is random or not. I feel like I could accomplish this task by ...
1k views

### Is there a name for a scatter plot which compares predicted vs observed values?

I have a scatter plot which compares predicted vs observed values. What is the appropriate name for this type of plot? To elaborate, I have a set of measurements for a specific engineering quantity ...
1k views

### Stata: plotting the random+fixed effects of slopes after multilevel models are fit with xtmixed

I am fitting a linear multilevel model of the following form: Y = b0 * X0 + b1 * X1 + b2 * X2 + b3 * X3 + u b0 = e0 b3 = e3 The units in the first level are ...
29 views

### How to get real value from log adjustement value

I am looking for some data for my research, and found reliable graph which showed the correlation of fetal weight and gestational age which is what I want. However, the weight in that scatter plot ...
2k views

### Scatter plot with two factor variables for black and white print

How can I best represent a scatter plot with two different factor variables. Consider the example problem, ...
359 views

### Is my scatter chart random

I used =RAND()*500 in Excel and added to a scatter chart: How can I know if it is indeed Random?
141 views

### Two-dimensional mean/95% LOA plot

I have a data set consisting of automated versus manual segmentation of images. For a given measurement point, comparison between the automated and manual method are reported via Jaccard coefficient ...
374 views

### Plotting a quasi-poisson regression [duplicate]

I have a quasi-poisson regression model for analysing the correlation between academic prestige and bulic visibility. I have a set of independent variables - continuous and dummies in this model. I ...
43 views

### Choosing a model for a relationship between academic prestige and public visibility

I have data frame in which I would like to analyse the correlation between academic prestige (factor analysis scores) and public visibility. These scatter plots reveal different patterns in the ...
71 views

### How to demonstrate a third quantitative attribute in a scatter plot effectively

I am trying to create a scatter plot that illustrates the relationship between x and y with a third quantitative attribute, z. However, I have a couple of constraints: I do not want to use ...
2k views

### What does this scatterplot mean? Uniform distributions? [closed]

I am very new to statistics and prob theory: I am looking at a scatter plot of two random variables, both uniformly distributed on $(0,1)$. The plot is approximatively a straight line, and the book ...
317 views

### TReading Residual Plot: Omitted Variable Bias of Dummy Variable

I have a plot of the residuals versus fitted values of an OLS model such that the shape of the plot are two identical randomly scattered clouds, one above and one below the $\hat{e} = 0$ line. Can I ...
98 views

### What type of relationship is in this scatter plot

I am plotting the number of accidents happened daily vs the daily precipitation for Car collision data of New York City for the year 2013 using scatter plot. I found a strange chart which I am not ...
45 views

### Significance for difference of points on an (x,y) grid

I have a set of data consisting of (x,y) points, divided among 4 groups. What technique is most appropriate for deciding whether groups are significantly different? It's probably OK to use the ...
60 views

### Help Interpreting These Scatter Plots

I've calibrated multiple times a model with three parameters: $a$, $b$ and $c$. I graphed each pair of resulting parameters to get an idea of the correlations and got these very strange plots: Here ...
7k views

### Plotting the results of GLM in R

I have this data plotted as a scatter plot in Excel: I had done a regression in Excel, and the p value was 2.14E-05 while the R- value was 0.32. I was told the R value was too low compared to the ...
464 views

### Is a Restricted Boltzmann Machine appropriate for predicting a vector?

I have a very large set of animal migration data, consisting of many series of vectors - each series is basically a path of a single animal. The dataset I'm using consists of 244 of these series. I ...
378 views

### Problem using funnel plot to detect outliers

I am trying to detect outliers from a list of genes. Each gene has x number of SNPs, plotted on the X axis, and a score derived from the mean score of each SNP in a test, plotted on the y axis. My ...
6k views

### Detecting outliers along the distribution in a scatter plot

I have a distribution represented as a scatter plot (see image below). It is clear to me from looking at the plot that there is an L shaped curve that describes most of the data. I am interested in ...
886 views

### Scatterplot matrix in R on iris dataset not very clear

I am tryin to generate some scatterplot matrices in R using IRIS dataset. First I do this: data(iris) cor(iris[,1:4]) This gives a nice symmteric matrix: ...
18 views

### Model to quantify 'enabling' properties of variable

From a large-scale patent analysis, I have some results which can be shown in a graphic but I would like to capture them in a model somehow, to be able to quantify a fit. The scatterplot below (in ...