Statistical Analysis Stack Exchange
Statistical Analysis Stack Exchange

Questions tagged [tables]

65 questions
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Who created the first standard normal table?

I'm about to introduce the standard normal table in my introductory statistics class, and that got me wondering: who created the first standard normal table? How did they do it before computers came along? I shudder to think of someone brute-force…
Daniel Smolkin
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What is a good resource on table design?

I've seen various theoretical treatments of graphics, such as the Grammar of Graphics. But I have seen nothing equivalent with regards to tables. Over the while I have developed an informal model of good practice in table design. However, I'd like…
Jeromy Anglim
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Statistical tables in old books purposefully wrong?

I remember having read a while ago that in old (pre-computer days) books, the last digits of the theoretical quantiles shown in the appendices were inaccurate in order to discourage plagiarism (the idea would be that if another book has a table in…
user603
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How do I find values not given in (interpolate in) statistical tables?

Often people use programs to obtain p-values, but sometimes - for whatever reason - it may be necessary to obtain a critical value from a set of tables. Given a statistical table with a limited number of significance levels, and a limited number of…
Glen_b
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Plotting sparklines in R

I would like to use R to plot out something like this: It would seem possible but highly complex to keep track of the coordinates, width, height, etc. Intuitively it would seem best to treat each cell as a new plot and transform the coordinates for…
Ming K
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When would it be appropriate to report variance instead of standard deviation?

I have conducted an analysis in which I have modeled different variance components. When reporting the results in a table, it is much more concise to report standard deviations instead of variances. So, this brings me to the question - is there ever…
Abe
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Number of significant figures to put in a table?

Is there a well founded rule for the number of significant figures to publish? Here are some specific examples / questions: Is there any way to relate the number of significant figures to the coefficient of variation? For example, if the estimate…
David LeBauer
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Best Practices for Creating 'Tidy Data'

Hadley Wickham wrote a stellar article called "Tidy Data" (link) in JSS last year about data manipulation and getting the data into an "optimal" condition in order to perform analysis. However, I was wondering what were best practices in terms of…
amathew
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What do you do if your degrees of freedom goes past the end of your tables?

The degrees of freedom in my F table don't go up high enough for my big sample. For example, if I have an F with 5 and 6744 degrees of freedom, how do I find the 5% critical value for an ANOVA? What if I was doing a chi-square test with big degrees…
Glen_b
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Boxplots as tables

We are preparing a manuscript and the editor asked us to convert a figure with a boxplot into a table "because of the more exact data content". While I think boxplots are pretty decent in revealing something about the data, I was wondering what you…
Roman Luštrik
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How to generate nice summary table?

I want to have R display the data it gives me from the summary() function in a table so I can easily share this. I am currently just doing summary() in the console and then taking a screenshot, but I would rather have this generated as a nice table…
Ethan Bartolic
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Reporting Results of Mann-Whitney U Test - Means vs Medians

I had a question yesterday that I got a bunch of great responses on. I have, hopefully, a quicker question here. There is a debate in the literature regarding reporting means vs medians in a Wilcoxon-Mann-Whitney test. See this and also this. I…
Eric
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How to determine how many variables and what kind of variables a table of data has?

Here's an example regarding what I'm lost on. In the past I've just found myself counting columns to determine how many variables a table has, but I've realized that's totally insufficient. For example, I look at the following table and would think:…
Charles Clayton
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Test of significance for comparing counts of subjects across multiple groups

I have a fairly basic understanding of stats, but I generated a table for my PI with tests of significance (Fisher & Mann-Whitney-U) for categorical and continuous variables across 6 different subject groups. The first row of my table is the N (and…
Robert
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Calculate p-value for a negative z

I'm trying to do a hypothesis testing and the result I'm getting is strange because the p value I get is greater than 1. I'm using $p_0= 0.65$ and $\hat{p} = 0.60$. To calculate $Z$ I'm using $(0.60-0.65)/\sqrt{0.65(1-0.65)/50} = -0.74$ In the $Z$…
Chen
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