# Questions tagged [scatterplot]

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

299 questions
Filter by
Sorted by
Tagged with
1 vote
42 views

### Intensity outliers/anomalies in 2D plot

I wonder what kind of method better to use to see outliers on z value of 2D plot. For example, I have measurements of x and y values both in range of 1 to 16 with step of 1. Next I calculate how many ...
• 11
13 views

### Is there a statistical reason why I have diagonal lines in log2FC correlation plots?

I have created a de novo RNA-seq assembly using Trinity with samples from 4 treatment groups and then ran a DEG analysis on each pairwise combination of the 4 groups. Then, I looked at how DEGs that ...
1 vote
48 views

### How to find relationship between a categorical nominal variable and numerical variable? [closed]

I am interested in finding the relationship between a nominal categorical variable and a numerical variable. We can't use scatter diagrams, or measurements of correlations for finding such ...
• 111
53 views

### Visualize Cronbach's alpha in R Ggplot scatterplot as a regression line? [closed]

I'm looking for a way to make a scatterplot of the correlation between two questionnaires using Cronbach's alpha: Data: ...
312 views

### Why do my residual plot and scatterplot look the same and what does this mean?

I am investigating the relationship between device usage and screen time for my math assignment (my last ever high school math assignment, yay!), but after creating the residual plot, I realised it ...
• 23
1 vote
38 views

### Dataset with two unique trends?

I have a scatterplot displaying one data set that, at first glance, has a weak negative correlation. Upon further inspection, however, it appears that the data set shows two stronger linear trends ...
29 views

### What is MA-contour plots? [closed]

I recently read a paper describe their result with MA-contour plots, I did some searches, but most of the information I could get was about the results of ...
• 113
633 views

### Should You Specify a Curvilinear/Non-Linear Effect If You Suspect It is Spurious?

Consider the following (simplified) example of a project I am working on: I assume that $X$ has a linear effect on $Y$. However, after plotting the relationship on a scatter plot, it looks like the ...
28 views

### Interpreting a basic scatter plot [duplicate]

I am trying to interpret this pretty basic scatter plot but am new to this so I don't want to get it wrong. Is it fair to say that there appears to be a moderate positive relationship between the two ...
• 1
24 views

### Plots for values that are discontinued

I have a series of data that express the change of a quantity over time. However, one of its characteristics is that at some points of time, there is no data. If I plot this value over time I have: ...
• 197
1 vote
57 views

### Scatterplot relationship between dependent and independent variable for linear regression analysis

I am performing an univariate linear regression analysis. Before running the model I was always told to get an idea of the relationship between the independent and dependent variable through a ...
• 45
1 vote
234 views

### How to Interpret scatter plot for binary response?

I have come to know about scatterplot matrices, where pairwise scatterplots for covariates are built and then binary responses are jittered. This plot is helpful to give an idea about how each ...
• 41
1 vote
193 views

### Understanding the Difference Between Independent and Dependent Variables

I'm new to statistics and I'm struggling to grasp the distinction between an independent and a dependent variable. For instance, if I want to examine the correlation between daily COVID-related deaths ...
1 vote
34 views

### I want to know how this graph is being created? [closed]

I found this plot in a paper. I have found similar plots in other papers from the same team. It is basically the comparison of MODIS C6 and C5 products with AERONET. I wanted to understand what that '...
• 11
1 vote
53 views

### Is there a name for data that, when plotted, seem to have two (or more) distinct trends?

I have the following plot, which appears to have two pretty distinct trends. The plots shown here and here depict similar situations. Is there a name for data that have two or more distinct trends, ...
• 235
465 views

### Visualising scatterplot with too many points and two or more groups

I am trying to plot data with a large number of points. The goal is to see the basic distribution - location, dispersion, shape - of the observations. With a simple scatterplot, even with low ...
• 171
318 views

### Boxplot or Scatterplot?

I created boxplots for 5 traits to show the spread of true age for each variant of each trait in both samples between 2 observers: A professor suggested that I should use scatterplot of Price vs Kim ...
• 121
30 views

### What is the name of a plot that looks at the effect of ony one variable in a regression model? [duplicate]

In short: what is the name of the type of plot below? These seem like standard plots, so I don't want to rename them by accident (I'm giving a presentation on this). The code itself does not matter ...
• 1,353
857 views

### Are there any statistics to see if a categorical variable produces good segments within a scatter plot? [closed]

Within a scatterplot of two continuous variables. I am looking for a statistical method to determine if a 3rd variable that has a limited number of categories/groups (3-8) is able to produce visually ...
• 2,214
372 views

### How to handle triangle-shaped scatterplot of data?

Over the past year, I have tried to record my productivity in the following way: The first yellow mark is the time I "clock in", or start working for the day. For the five minutes of work ...
• 14.6k
1 vote
757 views

### Is it possible to create a scatterplot that adjusts for controlled variables (e.g. linear regression)

I am pretty familiar with linear regression analysis, but not about how to generate plots using it (aside from residuals, etc.). I'd like to create a scatter plot of two variables, say depression and ...
• 21
1 vote
452 views

### Interpreting 2 residuals plots [closed]

Hello. Can anyone help me with interpreting these plots? I would like to know what assumptions of the linear model are not being met and what method should be used to fix the problems. I think there ...
• 11
60 views

### Is there a name for these lines on a plot?

I'm working with plots for which I'm finding the maximum point and labelling the x and y values at which it occurs: My question is, is there an 'official' name for the red dashed lines that extend ...
• 259
35 views

### Is this relationship between variables linear?

I have four research questions and all of them has the same main "independent variable", as such the relationship between x and y1, y2, y3, y4. This is not a multivariate analysis, I am just ...
• 63
1k views

### Alternatives to scatterplot for visualisation for large samples

I would like to visualise the following scatterplot in a different way that would make it more intuitive. The X axis is trading frequency and describes how many trades were conducted whereas the Yaxis ...
• 305
301 views

### Scatter Plot Interpretation for Temperature and Precipitation

The precipitation data points don't make a straight line along the blue regression line and most of them are present between 24.25-25.25 °C (approximately). What does this tell me about the ...
• 111
1k views

### Clustering leading to visually overlapping clusters on scatterplot

I am dealing with a dataset with 13 features. After going through some standard scaling and missing data imputation, I use kmeans from sklearn to create clusters. Now the point is that, although the ...
150 views

### funnel-shaped scatterplot - looking for similar statistical methods than correlation or regression

I believe I am looking up wrong keyterms when searching for solutions, so i'd appreciate some help. initial situation: I want to analyse if specific forest stands are more prone to deer damage using ...
1 vote
130 views

### Does this scatterplot indicate homoscedasticity?

Can anyone perhaps confirm if it is true that this scatterplot indicates that my data is homoscedastic? Since there are quite some more datapoints on the upper side, I was a bit hesitating. Thanks a ...
• 23
337 views

### What jitter value should I use for this scatter plot?

I plotted a scatterplot between humidity and temperature (air) in centigrade. I got the following graph; It is evident that the points fall in discrete columns. This might be because of the rounding ...
2k views

### What is the best way to visualise a panel regression?

Simple scatter plots or a correlation matrix can be misleading since they aggregate all years together. What would be te best way to visualise relationships between variables taking time into account? ...
2k views

### What is the best way to represent Spearman’s correlation graphically?

For my thesis research I have to do Spearman’s correlation tests on a set of ordinal variables. I would like to represent the correlations graphically to include them in the report and give a clearer ...
• 139
105 views

### How to perform a breakpoint analysis on these two variables (Survey Score and Total # of Outages)?

Here is a snippet of the data: I believe both of these are discrete variables. I want to first determine if a correlation exists. Would I utilize Kendall’s Rank Correlation? Second, I want to create ...
70 views

### spearman correlation: should only the ranked values be plotted on a scatterplot?

My data is not normally distributed and so I did a spearman correlation rank test. I now need to make a scatterplot showing the spearman rank test results and I am not sure if the scatterplot should ...
1 vote
126 views

### Linear regression assumptions violated

I have an independent variable hours/day sitting and a dependent variable test scores, I think all of the assumptions of linear regression are violated, as in the pictures that I added So I did one ...
• 57
43 views

### Mathematical rule for choosing X & Y for scatterplot maximising spread of points [closed]

Is there any method for choosing a combination of X and Y dimensions for a scatterplot, from a larger dataset that has been standardized to be centered at zero and have unit variance, that will ...
• 290
3k views

### Spearman correlation test and linear relationship vs monotonic relationship?

I want to use Spearman's correlation test. My data is not normally distributed. Below is a scatterplot of this data. I read somewhere that Spearman's correlation coefficient can describe monotonic ...
• 11
60 views

### How to display error on a 2d median

Below is a 2d scatter plot where the large green dot is the median of the data in x and y. My question is about whether there is a convention for showing the error on the median. As shown, each of the ...
1 vote
868 views

### Can the Response Variable ever be used in Clustering?

I have the following question: Can the response variable ever be used in a clustering algorithm? I understand that in general, clustering is considered to be an "unsupervised learning algorithm&...
1 vote
63 views

### What kind of correlation is this?

I was wondering whether these 2 variables are correlated. According to the analysis, the correlation is 0.89, which is expected, as they are items of the same scale. But I'm having trouble with ...
• 15
1 vote
610 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 ...
• 13
91 views

### How do i interpret this Scatter Plot [closed]

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 ...
• 21
130 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 ...
1 vote
105 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 ...
• 11
1 vote
125 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 ...
• 11
1 vote
45 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 ...
• 473
91 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 ...
• 1,369
113 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 ...
1 vote