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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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8 views

Probability Plot for Ordinal Logistic Regression on SPSS

I would like to draw a plot of my predictor variable (continuous) vs. the probability of my outcome variable (4 ordinal levels) on SPSS. I have run the simple, usual PLUM model but there is no direct ...
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0answers
11 views

Why my clinic's data on age and blood glucose shows an inverse relationship? [on hold]

When I graph my clinic's patients' age (Y axis) against their A1c values (3-month average blood glucose) (X axis) I see an inverse relationship. Using national data sets (NHANES) on both variables (...
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0answers
12 views

Does this seem like a regular scatterplot for image classification? [closed]

I classified some images using the keras pretrained deep networks and the result is shown in this picture. I am wondering why the points follow such a pattern from 0, 0.2, 0.4, 0.6 and 0.8? Why are ...
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0answers
23 views

How to describe this scatterplot? [closed]

How can I describe this scatterplot?
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0answers
19 views

Bootstrap resulted in something that looks like a mixed distribution. What do?

TLDR Bootstrapping resulted in a crazy scatterplot. Totally clueless here. I have a dataset (not going to say much about it, it is a bit confidential), running a Markov chain-based algorithm on the ...
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0answers
12 views

plot two groups of wind direction [closed]

I have two groups of wind direction and I want to use spoke plot in R peogramme I search about it in R programme using ?spoke plot but i cant found any information . for more detials the first ...
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2answers
427 views

Which statement is correct? [closed]

I know the correct answer is number 4, but can someone explain why?
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1answer
71 views

When adding jitter a scatterplot for conveying information is appropriate

"Jittering" is adding a bit of random noise to scatterplots, to better see the information contained in the data, usually when there is a lot of overplotting. This overplotting can result from e.g. ...
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1answer
60 views

Intuition behind normal probability plots?

I'm studying for an exam in experimental design. I know from previous exams that I will need to construct normal probability plots manually but strangely, this hasn't been mentioned in the literature. ...
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1answer
124 views

Correlation, Scatter graph [closed]

I have river flow rates for two separate rivers The data produced this scatter graph for both rivers https://i.imgur.com/jVnWF3t.png What is the best type of correlation to use here? Spearman, ...
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1answer
115 views

Which type of correlation should I use here? [closed]

For this data, I am looking at the relationship between bee population (1000s of bees) and area of genetically modified crops (km2). I have generated a scatter graph using this data: Question: What ...
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0answers
54 views

Interpretation scatter and cluster plots [closed]

I used the frequencies of different learning strategies that students mentioned in a 2x2 factorial within design (across 4 different situations) to draw up several plots in R. What I tried to find out ...
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2answers
205 views

How to represent the probability of a point belonging to a cluster?

I want to do a scatter plot with a two-dimensional dataset. Suppose I have only 3 clusters. Then, I could assign each cluster a color of these: red, green and blue. If soft-assignment was made, then ...
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1answer
69 views

What is this visualisation called? Scatter plot with quadrants and confidence intervals

This is a question about data visualisation - I am sorry that it is probably quite elementary and possibly only just relevant to CrossValidated. I would like to create a figure that will help people ...
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0answers
18 views

Visualizing clustering on 2D binary data [duplicate]

I have a 2D binary array (size 1445 by 120), which I have clustered into 10 clusters using Python's AgglomerativeClustering method. Each of the 1445 samples is given a cluster index of a number from 0-...
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0answers
21 views

Get rid of the disrupting points

Here on the following picture, we can identify two clouds. We can identify a lot of points that are out of the two clouds and can disrupt a bit the the training and test accuracy (%). Is there an ...
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2answers
4k views

How to plot binary (presence/absence - 1/0) data against continuous variables [duplicate]

I am trying to plot presence/absence (1/0) of a sample species against various environmental variables. I have put presence/absence on the y-axis and the environmental variable (in this case ...
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3answers
138 views

Meaning of this scatter plot

I have two types of treatment, a and b, and I want to know if one is more painful than the other. I can apply both treatments to each patient, and ask for the pain experienced with each on a scale 0-...
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0answers
27 views

Time graphics (and time is not a dependent variable!)

I have a dependent variable that are correlated with the passage of days (1, 2, 3, ...). But I fitted a linear model without days/time, because I am more interested in other things I can influence ...
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2answers
92 views

Do “splits” in scatterplots indicate anything?

Background I'm exploring how 7 system parameters spanning mechanical, electrical, and physical (size) properties are related. I gathered the 7 specs of 36 different systems, and I plotted every ...
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0answers
25 views

Plotting $\alpha \%$ prediction bands

After calculating the relative errors of some predicted value vs the real value, I've made a plot of the relative error vs some property of my dataset (in this case the size); As you can see, the ...
2
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1answer
196 views

How to interpret draftsman plot

I've conduct some draftsman plot to find the correlation between variables. And I got this kind of result. But I don't understand how to interpret the data. What is the different between the color? ...
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0answers
141 views

Get rotation of noisy rectangular 2d point cloud with pca

I have a set of point clouds in nd space. The clouds tend to be rectangular in nature in 2d space but can easily have outliers or look slighly L shaped. I would like to rotate the point clouds so that ...
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0answers
89 views

Sensitivity analysis with scatter plots

I am trying to do a sensitivity analysis of a given model with several inputs using some given data. Let us call this model $f$ and write it as $ f(x_1,x_2,x_3)=y$. The data given is represented in ...
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2answers
39 views

Test for relationship between variables

I want to describe the relationship between pairs of continuous variables. I know this is commonly done just by looking at a scatterplot, but I think this is not appropriate for my problem, because (1)...
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0answers
20 views

How could forcing my regression line to go through the origin increase the R^2? [duplicate]

I created the scatterplot on the left in Tableau and ran the regression line, which resulted in an R^2 of 0.63 (confirmed this in excel as well). Then, I used the "Force y-intercept to zero" option ...
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1answer
224 views

Is there a specific name for this plot?

This plot represents the popularity of technologies in two "tools", vue and react. In left-top corner are specific technologies for vue but not for react, right-top technologies popular in both tools ...
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0answers
33 views

Does taking Ln of dependent variable improve assumptions of a multiple regression?

I have run two multiple regressions in R, one with average abundance as dependent variable, and one with log avg abundance as dependent variable. With the given plots, can we say one of the two ...
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1answer
360 views

Distance between all the dots in a scatterplot in R [closed]

Is there any possibility in R to get a list of distances between all the points in a Scatterplot? For instance, this Scatterplot: So, I would like to obtain a list of distances among all the points.
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1answer
53 views

Lemma about multivariate statistics

I am trying to prove a lemma. Consider $X_1,.,X_n$ to be i.i.d random variables. Show that, in particular: $$E\|\hat{\mu}-\mu \|^2=\frac{1}{n}\text{trace}(\Sigma)$$ I have the following partial ...
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2answers
650 views

Count points in each quadrant of a scatterplot [closed]

I'm an R noob, please bear with me. I'm using R to plot data in a scatterplot along with 2 gridlines separating the plot into 4 quadrants. I'd like to count the number of data points in each ...
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1answer
42 views

How to cope with scatter matrices of a lot of features?

Pandas scatter_matrix is a great tool for finding correlation between different features - but it's only readable if the number is small. What way do I have to find ...
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0answers
120 views

How to interpret pattern in this scatter plot?

How could you interpret the clear pattern that appears in each plot, in which it seems the points are very well aligned? The dataset is Olives, from ...
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1answer
26 views

Is there a way to calculate the coefficient determination if the values of x and y are not given?

so I am having a problem to calculate the r-squared because the values of the variable (y and x) are not given in the question. All I have is the mean and the standard deviation of each variable as ...
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1answer
70 views

Ways to show how well or badly predicted data reflect observed data

I have observed rainfall data and would like to know how well they represent the predicted data. My first idea was to show the data on a scatter plot. Plotting x =observed vs y = predicted I set the ...
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1answer
302 views

Connecting scatter plots with linear interpolation?

Given the decision that on a scatter plot the data points will be connected (just as an example, let's say we're talking about students attending class per week), is it more correct to connect the ...
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2answers
452 views

how to interpret a scatter plot below?

Below is the scatter plot of Brightness temperature on Y axis and corresponding Rainfall rate from TRMM satellite image on the x-axis. I want to know if there is a relationship between the two. If yes,...
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0answers
1k views

Why does a scattered residual plot indicate a strong linear model?

I'm in AP Statistics, an introductory college course taught at high school. We learned that if a residual plot has a pattern, we must re-express the data until the residual plot is scattered. This is ...
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2answers
31 views

How do I graph this data with a simple scatterplot?

My data looks like this: I want to see how weight is distributed. How do I do this? This just gives me a weird line: plot(nc['weight']) That isn't right. Any ...
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0answers
35 views

What is a type of graph that's graphing only 1 type of value on a grid?

What is a type of graph that's graphing only 1 type of value on a grid? Like, say, you have an ice cream seller, and you collect all the prices for the ice cream, but you somehow don't have any other ...
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5answers
3k views

How do I interpret this Scatter Plot?

I have a scatter plot which has sample size which is equal to the number of people on x axis and median salary on y axis, I am trying to find out if the sample size has any effect on the median salary....
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1answer
78 views

Number of distinct scatterplots among $p$ variables

In Chapter 2 Section 2.1.4 of An Introduction to Statistical Learning (James et al, 2013), the assertion is made that "...if there are p variables in our data set, then p(p-1)/2 distinct scatter plots ...
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1answer
320 views

Spearman correlation signficant but scatter plot not?

For my data (based on 5-item numeric likert scales), I have tried to calculate correlations. As the data is not normally distributed (according to a Shapiro-Wilk test), I have used Spearman ...
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1answer
189 views

How to plot error bars on a graph? [closed]

I'm sorry for a stupid question: How to plot error bars on a graph in R? Assume I have 3 columns in a table: x, y, errors of measured y. What kind of plot should I use?
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0answers
134 views

How to determine which variable goes on the y or x axis in a scatterplot [duplicate]

I am trying to do a scatterplot to see the relationship between the BMI of a female athlete and their Sum of skinfold. How do I know if the BMI is my X axis and the Sum of skinfold is my Y axis, or ...
1
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1answer
176 views

Is Plotting textual dataset in scatter plot after clustering the data reflect nature of data?

i have textual data points.. (1000+) text documents.. i used K-means to cluster these data, then used SVD method upon (TF-IDF matrix) then select the 2nd and 3d columns in VT matrix to represent these ...
1
vote
1answer
312 views

How to estimate an ellipse's parameters from the points scattered around it? [duplicate]

The scatter plot shows two data series (x,y) the are placed somehow around a tilted ellipse. This is in fact the way I have drawn this example plot. Which statistics of the data sets are the most ...
2
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1answer
450 views

Least significance difference (LSD)

Hi all sorry if I am not very well prepared for this question. I just have a vague idea about what I am trying to achieve without knowing much statistics, but its of urgent nature that is why I am ...
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1answer
250 views

Scatter Plot and Regression Line

using the dataset CO2 as an example. After I find the regression lines of uptake and Plant (a factor with 12 levels) ...
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1answer
935 views

Scatterplot R2 linear result [closed]

If I have an R2 linear result of .004 showing up on my scatterplot, what does it mean? I am having a difficult time interpreting my scatterplot.