A graphical display to summarize the distribution of a sample. It displays five numbers plus (possibly) some outliers - those five points being the median, hinges (approximate quartiles), and the largest and smallest value not counting any points marked as outliers.

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5
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3answers
738 views

Is visual inspection the only way to compare large datasets?

I have two large data sets, in fact, one of them is even much larger than the other. Visually, there doesn't seem to be that much difference between them: The actual data underlying the box plot ...
1
vote
1answer
52 views

Reproduce boxplot with only data points at given quantiles

It is trivial to create a boxplot in R with a full dataset. However, with limited access to the whole dataset, I just have 5 data point at min, 25%, 50% ,75%, and max. So is there any easy way to ...
11
votes
3answers
432 views

Deduce variance from boxplot

I was wondering how to deduce the variance of a variable using a boxplot. Is it at least possible to deduce if two variables have the same variance observing their boxplot?
4
votes
0answers
40 views

Visualizing many left-skewed distributions

I have a series of left-skewed/heavy tailed distributions that I would like to show. There are 42 distributions across three factors (labeled as A, ...
0
votes
1answer
30 views

statsmodels: error in kde on a list of repeated values

I am using Python's statsmodels module to plot a violin/bean plot of some data. I get the error "LinAlgError: singular matrix" in the KDE calculation whenever a single violin plot is drawn from a list ...
0
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0answers
25 views

beanplots: plus sign?

I would like to draw bean plots using the statsmodel package for Python. In the example provided on the documentation, I see a red plus sign in each beanplot: What does it represent?
3
votes
1answer
83 views

Interpreting box plots with one whisker [duplicate]

I have done a boxplot to represent my claim frequency. However make 2 and 4 have only 1 whisker. How do I interpret that?
6
votes
2answers
355 views

“When to use boxplot and when barplot” rules (of thumb?)

Both box-and-whisker plot and bar chart are appropriate graphics for ANOVA according to The R Book (Crawley, 2013), but which is more appropriate? I suppose it depends on situation... can anybody help ...
2
votes
0answers
23 views

Calculating boxplots with imputed data

I have imputed a dataset which has over 200 variables, and 20 observations. In worst case, 80% of the data is missing, in the best case 100% is available. 5 out of the 20 participants provided data ...
0
votes
0answers
30 views

Combining Box Plot with frequency count [duplicate]

Are there graphing techniques (certain kinds of plots) that are similar to the Edward Tufte's box plots - shown below - but that consider the distribution of the data points? But instead of a black ...
5
votes
1answer
203 views

Pairwise comparisons for a regression with sandwich estimates (in R)

The question in short I run a robust regression in R and made a boxplot with only one of the predictor variable grouping the response variable. On this boxplot I'd like to add some information about ...
1
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0answers
38 views

How to check the assumption of equal error variance might be violated?

I want use this box plot to check it. Thank you
3
votes
1answer
128 views

Explaining a boxplot and providing a reference in a technical paper

I am writing a CS paper, I usually would assume anyone knows what a boxplot is in a technical domain. Is a reference required or are boxplots knowledge that can be assumed? What is essential to ...
4
votes
3answers
171 views

Making box plots when analyzing a case with 3 predictor variables?

When there are 3 predictor variables to consider, what is the correct procedure? Do we make box plots for all the possible 2 combinations or is there a way to compare 3 variables? Sorry if this is a ...
1
vote
1answer
510 views

Boxplot interpretation: is it correct that a boxplot is missing a whisker?

I have a data set that has customerID and daily visits. This dataset records the number of times customers visited the site in a day. ...
1
vote
1answer
82 views

Graphic representation of data

I conducted exploratory analysis of my data and got Mean and standard deviation values from the original data and plotted the data using boxplots. I conducted regression models (GLM and GLMM) on the ...
3
votes
2answers
127 views

Comparing weights versus time graphically using reshape, vioplot, and ggplot2

I have a group of 200 children who came to clinic at months 0, 1, 2, 3, 6, 9, and 12 this year. At each clinic visit the children were weighed. ...
6
votes
7answers
535 views

Software to produce confidence interval error bars from summary statistics without access to the original data

A bit like a box plot. I mean not necessarily the standard upper confidence interval, lower confidence interval, mean, and data range-showing box plots but I mean like a box plot with just the three ...
0
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0answers
119 views
4
votes
1answer
803 views

Negative inner fence value in a box and whiskers plot?

I calculated a negative lower inner fence value. I've double checked my work but I can't figure out what's wrong. I was under the impression that these values couldn't be outside of the min and max ...
-1
votes
1answer
107 views

Multiline names (x labels) in boxplot [closed]

In R, I would like to give multiline names to some data sets in boxplot, like this: ...
3
votes
0answers
28 views

Application to a real life problem: identifying outliers in univariate time series data [duplicate]

I have a rather simple problem that I'm having trouble deciding an answer upon. As a student studying Statistics I'm very familiar with terminology and theory but I suppose I'm stumped on my first ...
3
votes
1answer
270 views

Assumptions of Mann-Whitney U-test

I have 2 samples, which I got by conducting a 5-point Likert scale survey. I have 9 results for group A and 17 results for group B for 12 variables. I would like to test now if the groups differ ...
0
votes
2answers
155 views

Re-check boxplot after outlier removal

I have a sample of 608 subjects and I need to remove outliers for age. In R, the boxplot appears like this: It shows 74 outliers: ...
3
votes
1answer
256 views

Statistical grounding for difference between median as a proportion of overall visible spread

I'm helping someone with prep for their stats assessment and they are being instructed to use the following to make an informal inference about the population: I was wondering if there is any ...
5
votes
2answers
679 views

Interpreting weird box plot with reversed whiskers

Although I'm fairly new to box plots, I thought I had got the hang of them, until I came upon this one today. I don't know what to make of that bottom "whisker" drawn inside the box. This ...
4
votes
1answer
89 views

Understanding the whiskers of a boxplot

I have a question regarding the interpretation of the whiskers of a boxplot. I have read the following: "On the top and bottom of the rectangle, the “whiskers” show the range of 1.5 times the distance ...
4
votes
2answers
404 views

How to interpret a box plot?

I have some data in which there are 5 categorical explanatory variables (concern, breath, weath, sleep, act) and 1 continuous response variable (...
1
vote
1answer
727 views

Outliers for boxplot

If I have a set of data and I want to display it as a boxplot, when there are some outliers in the boxplot, we indicate outliers with a *. If there are two outliers ...
2
votes
1answer
785 views

What is a 'bagplot', or 'bivariate boxplot'?

I've found a paper which introduces the multidimensional (bivariate here) version of the boxplot - a bagplot. What is that bagplot exactly? I can see the series of nested polygons based on vertices, ...
0
votes
2answers
570 views

Equivalent of a boxplot for normally distributed data?

If I plot some data in function of a categorical variable in R, I get the standard boxplot. However, the boxplot displays non-parametric statistics (quantiles) that don't seem appropriate for normally ...
1
vote
0answers
1k views

How do I create a categorical scatterplot in R like boxplots? [closed]

Does anyone know how to create a scatterplot in R to create plots like these in PRISM's graphpad: ...
1
vote
0answers
296 views

How to establish relationships using box plots?

I am examining the relationship between a categorical variable and a quantitative one. For the test of linearity, I was told that I must use scatter plots. However, this is no longer applicable if one ...
6
votes
2answers
237 views

Making boxplots of hourly data in R

I have air temperature measurements from two fixed locations measured at hourly intervals. The code below is a random set of numbers used to represent the format of my data: ...
6
votes
3answers
286 views

What distribution can be closely (or precisely) fit to the “5 number summary” statistics?

I'm programming a web tool (="I'm a stats ignoramous who drifted here from stackoverflow.com") that allows scientists to enter predictions about the 5-number-summary stats for a variable. Entry is ...
1
vote
1answer
124 views

boxplot : computed values combined with raw data

Given computed values for a box plot (min, lq, median, uq, max) and original raw data size is it possible to merge that with raw data. given: ...
4
votes
2answers
1k views

Wondering what this bean plot analysis chart means

How does one interpret and generate bean plot charts. Here is one example taken from Walkes et al. 2010. What kind of data is it most useful for?
1
vote
1answer
472 views

How to draw a side-by-side plot mentioned in “Graphical Display as an Aid to Analysis”

Emerson, J. D. (1991) Graphical Display as an Aid to Analysis, in Fundamentals of Exploratory Analysis of Variance (eds D. C. Hoaglin, F. Mosteller and J. W. Tukey), John Wiley & Sons, Inc., ...
5
votes
3answers
3k views

How can I draw a boxplot without boxes in R?

Using R, I'd like to plot two boxplots without the boxes—just the points. Creating clean boxplots in R is trivial: ...
6
votes
1answer
2k views

Highlighting significant results from non-parametric multiple comparisons on boxplots

I have box plots of 13 groups that I show in one plot. The groups have unbalanced populations and are not normally distributed. I want to show which pairs are statistically similar (i.e., have ...
4
votes
1answer
1k views

Creating a plot with boxplots ranked by quantiles in R

I am trying to create a plot in R which gives me boxplots (and/or distributions) of one column ranked by quantiles (and/or equally spaced groups) of another column in a dataframe. An example would be ...
5
votes
3answers
969 views

Is it appropriate to identify and remove outliers because they cause problems?

This all pertains to my Psychology honours thesis. I have two groups (Autism and control) and all participants completed four tasks. It is very important to my study that the groups do not differ on ...
4
votes
3answers
684 views

Boxplot for several distributions?

I need to draw 20 distributions in a single graph in R, and it doesn't look good (cluttered) to me with regular boxplot (20 boxes) even with boxwex=0.3. Could you suggest me how can I plot a kind of ...
18
votes
2answers
1k views

Is there a boxplot variant for Poisson distributed data?

I'd like to know if there is a boxplot variant adapted to Poisson distributed data (or possibly other distributions)? With a Gaussian distribution, whiskers placed at L = Q1 - 1.5 IQR and U = Q3 + ...
10
votes
1answer
10k views

Boxplot with respect to two factors using ggplot2 in R

I am very new to R and to any packages in R. I looked at the ggplot2 documentation but could not find this. I want a box plot of variable boxthis with respect to ...
2
votes
2answers
16k views

How to customize axis labels in a boxplot?

How can I change the labels of the vertical y axis in a boxplot, e.g. from numbers to text? For example, I would like to replace {-2, -1, 0, 1, 2} with {0hour, 1hours, 2hours, ...}.
4
votes
1answer
414 views

Boxplot with glme

I am examining the difference between a physical feature of different species of animals. Due to the nature of my experiments I'm using a nonlinear mixed model with the following setup: ...
9
votes
4answers
7k views

Labeling boxplots in R

I need to build a boxplot without any axes and add it to the current plot (ROC curve), but I need to add more text information to the boxplot: the labels for min and max. Current line of code is below ...
6
votes
1answer
5k views

How to add horizontal lines to ggplot2 boxplot?

I have a boxplot output in R using ggplot2: ...
4
votes
2answers
1k views

Combine multiple boxplots in a lattice

I have a data-table that has about 26000 rows and about 35 columns. The columns are paired, so the values in columns 6 and 7 (for example) are related to each other, so are 8 and 9 and so on. There ...