Questions tagged [barplot]

A bar plot or bar chart, is a graph of the frequency of categorical data. It is differentiated from a histogram because in a bar plot, the data are inherently categorical.

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12 views

How to add horizontal lines to a ggplot2 grouped barplot [on hold]

I have created a grouped barplot with ggplot2 consisting of 4 groups (x-axis) with each 4 subgroups (bars). I now want to add a horizontal line (representing a threshold) similar to this. However, I ...
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How to describe a bar graph?

What are some words for describing the overall shape of a bar graph for a nominal variable? The word "uniform" might apply when the bars are roughly the same height, but what can be said about other ...
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Zonal statistics (mean± StDev) from polygons with different area

I am analyzing a temperature image using a land cover map with the overall goal to prepare a barplot where I report the mean ± StDev temperature for each land cover class. To do so I assigned each ...
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1answer
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Nominal data appear better on bar chart and Interval data on line-chart

I read this somewhere that Nominal categorical data makes sense in a (stacked) bar chart, but not in a (bivariate) line chart AND ...
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52 views

Name of a Sample Graph

I wanted to make a graph for my data which looks something like this (This sample image is taken from Google): But, I am not able to search what is the name of this graph which shows frequencies on ...
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1answer
1k views

I have conducted a Chi-Squared test in R, and want to know how to display observed vs expected values in a barplot?

Essentially I have my data, and easily calucalated the chi-squared statistic. Now I have this, I want to create a bar plot with my observed values beside the expected, for the relevant groups. I ...
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2answers
78 views

Is it OK to overlay a line chart overtop a bar chart to show averages in different categories?

I'm a software developer and not a data visualization expert by any means. I was sent a screenshot of how my client wants some data visualized. Each bar is the average score for your team. The points ...
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1answer
208 views

What is this bar graph with subgroups called?

Notice that it has groups $(D_1, D_2, D_3)$ and each group has subgroups $(c_1, c_2, c_3)$. .
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How do I compare the skewness and kurtosis of different histograms?

I have generated histograms from each of the succeeding years. I thought of plotting the skewness and kurtosis of each to compare them. I am not sure if a qualitative description suffices to show ...
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Reporting quartiles in bar plots

I have some non parametric data and my supervisor wants me to use bar plots to visualise it. He said because I'm using the median, that my error bars should be the 1st and 3rd quartiles....I get that ...
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Comparing Two Bar Charts

Imagine two bar charts with x-axis of 1,2,3,4. The first has 2,4,2,4 as the height for each container ( ie there are 2 1s, 4 2s etc). The second has has 6,12,6,12. I want a percentage from 0 to 100% ...
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Margins of error for a simple multiple-choice question

I wish to plot error bars on a bar chart that represents the answers of 200 respondents, randomly selected from a population of 50,000,000, to a simple multiple-choice question. Here are the ...
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Why does the area of a bar in a histogram represent the frequency of that particular class

In a bar-graph, the height of the bars represent the frequency of a particular category but it is counter-intuitive that in a histogram, instead of the height of the bar(which represents the frequency ...
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2answers
86 views

Data visualization improvements for this graphic

I need to visualize two related sets of data, a performance differential and a performance ratio. The image below is my first thought. The dot and wiskers represent the average differential with 95% ...
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3answers
377 views

What is meant by the statement- “Histograms plot binned quantitative data”?

The problem lies especially in the word-"binned". I've tried to consult the dictionary but it doesn't gives a satisfactory result. I came across this while I was reading the difference between ...
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312 views

How can I highlight small differences between columns in a bar graph?

I created a bar graph where the values are very close. Is there a standard way to highlight small differences? In my case there are quite a few columns, with values ranging from 250 to 280.
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How to Distinguish 22 Variables in a Stacked Bar Graph?

I have a tabular dataset that contains 75 samples (rows) and measures of 22 different human cell types (columns), like the following: ...
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257 views

Pareto Chart - when can be used?

I have a question on the Pareto Chart. I know it has been originally used in quality control, but do you think it is good to apply it to other domains as well? I have recently built a Pareto Chart ...
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1answer
229 views

Time period diagram (bar chart) - what is its more precise/widely used name?

I want to make a diagram like this to display the career spans of several soccer players one below the next: I know it's basically a bar chart, but I was hoping this has a more specific name, because ...
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1answer
379 views

Valid to use bar graph for nominal data with “check all that apply”?

I asked survey participants which people influenced their idea of what college will be like, instructing them to "check all that apply." I am trying to see if there is a difference in the type of ...
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1answer
155 views

What is the name for this bar chart visualization where successive bars drill down one segment of the previous bar

There is a kind of (pretty simple) visualization we use a lot in my office, but none of us knows what it's called: The idea is that the second bar drills down into the indicated data from the first ...
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1answer
84 views

How to choose the right colour palette for plots with lots of variables?

I am using R to generate several plots which will have 31 different variables grouped into 17 groups. Unfortunately I found out that default's ggplot's colour palette with evenly spaced hues (which ...
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Can I use a violin plot to visualize logistic regression results (predicted probabilities)?

I have a simple study in which I predicted the likelihood of an outcome as a function of a two-level grouping variable. Now I'd like to display these results in a graph. Initially I was thinking of ...
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563 views

Error bars on bar graphs: Is reporting confidence intervals really better than reporting standard errors of the means?

I have heard this advice repeatedly however recently when I was looking at my own graph with CIs I had a panic attack because the error bars overlapped, yet my analysis told me the difference between ...
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1answer
61 views

source info for a cartoon [closed]

I want to use this image in a presentation for teachers and I cant find the source, when I drop it in google images your site comes up, any idea of the source?
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Bird eye view of unknown data set [duplicate]

Pardon me if this question does not fit this site (or SE engine in general) but I do not know where to post it. Suppose that you have unknown data set which you want to explore. What functions/methods/...
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Stata: How to plot groups of variables side-by-side in stacked percent bar chart with subgraphs? [closed]

I did a cluster analysis of categorical variables and want to plot the result in a summary graph. There are three groups of variables that contain 'dummy variables'. I'm able to plot one group of ...
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Is it acceptable to convert composite Z-scores to T-scores (or scaled scores) to improve visualization on a bar/column chart?

My DV is a composite Z-score based on norm-referenced Z-scores on individual tests pooled together. I want to display the means, SD and "significance asterisk brackets" in a pretty standard column ...
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1answer
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Displaying mean +/- st. error or confidence interval on bar charts

When I look at scientific papers, bar charts I usually come to see are shown with mean +/- sem (standard error of the mean). As stated here, When standard error (SE) bars do not overlap, you ...
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1answer
227 views

How to apply distance metrics to compare bar plot (nominal histogram) data

I have a data set for libraries, I would like to find the (Similarity / dissimilarity) among it based on book category, so for each category there is single value represent the number of books that ...
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What is the best ratio between width and height in a Bar Chart?

A taller bar chart exalts its height, while a wider one diminishes the perception of the variations in height. I have a bar chart where I try to demonstrate this idea -> http://ltw1556.web.cs....
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1answer
158 views

Visualizing composititional time series with negative values and meaningful totals

I have a compositional time series containing negative values, like this: ...
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2k views

Grouped bar plot with different sample sizes [closed]

I'm trying to create a grouped barplot in R. The issue I have is that my two groups have different sample sizes (smokers = 50, non-smokers = 20), if I plot them using frequency alone I don't think my ...
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Plotting results having only mean and standard deviation

I am trying to visualize an appropriate plot for the observations in this table of means and standard deviations of recall scores: \begin{array} {c|c c|c c|} & \text{Control} & & \text{...
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1answer
337 views

Advice needed on plotting relativey extremely small values

My problem is that I need somehow to visualize on one graph percentages of 0.1%, 2.5% and the remaining 97.4%. The only thing I can think of right now is a stacked bar chart with an ...
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3answers
616 views

Linear equivalent to chord diagram

The Chord Diagram can be used to show directed relationships among a group of entities. This is a circular chart, much like a Pie Chart. What would be its linear equivalent, in the same way that a ...
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1answer
992 views

Bar plots with variable bases (intensive and extensive variables at once)

Is there a particular name for bar plots, in which bars are rectangular, with unequal bases? That is: width represents size (e.g. population), height represents intensive variable (e.g. CO$_2$ ...
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How to add a third variable to a bar plot?

I'm trying to find the best way to show the following data: ...
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2answers
728 views

What does a Barplot, a Boxplot and eCDF represent?

I want to understand what a barplot, boxplot, and eCDF represent when they are used for plotting data. A barplot is kind of intuitive, easy to understand what it represents. But I fail to understand ...
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2answers
563 views

Should we remove axis and use direct label on scientific chart?

Many people will agree with the Less is more gif. However, I read someone states that in scientific chart, you should not remove axis or use direct label. But I don't know why, I see no reason to ...
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Is there any use of having dual error bars in bar charts to show both descriptive and inferential statistics?

I would like to display information both about the distribution of the population and the certainty in the measurements in the same plot. Would there be any use of having dual error bars in a barchart ...
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842 views

Bar plot with median +/- median absolute deviation in scientific publication

I know bar plots usually represents mean +/- sem, but if the data is non-normal, is it ok to bar plot median +/- mad? I don't like box plots. Suggestison?
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131 views

Multivariate analysis?

I realize this might be a fairly broad question but could anyone suggest an appropriate statistical approach for analyzing this kind of data? For example does % of dead cells differ significantly ...
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generate frequency distribution from database

In a MySQL database there's a table with a single numeric value column. I want to plot the distribution of these values as a bar chart/histogram with the following ...
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355 views

Best way to compare distributions with spikes

Following this question, I am interested on the best way to display four distributions with spikes. Indeed, I have four distributions with circa 75% of elements in it at the maximum value (1). I am ...
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2answers
2k views

Is there a better way than side-by-side barplots to compare binned data from different series

I have a number histogram from a data source. I want to compare their distribution. For example series 2 is more to the right than series 1. Is there any good way to contrast besides plotting the ...
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2answers
24k 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 ...
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Box and whisker plot or bar plot with mean and SE?

I am trying to present my data in a meaningful way. To do so, I thought it is a good idea to use a box and whisker plot, because, it shows min, max, median and skewness of data. However, due to ...
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1answer
794 views

Represent data across multiple categories and sub categories

The data contain category and sub-category distributions. The categories are topics in a quiz such as: Music, Sports, Business. Each category has three levels to choose from: Basic, Standard and ...
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1answer
156 views

What kind of Diagram to visualize Results from Software Usability test?

I know how to use R but I am kind of stuck on the statistical part here: I need to visualize the results from a software usability test where the total number of clicks of each tester for every one ...