# Tagged Questions

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### One Response Value Fails for Proportional Odds Assumptions

I am analyzing placement scores on the response of students' grades for various courses. I have used a Chi-Sq test with the likelihood ratio to check the proportional odds assumption. For one of the ...
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### What are the best method for presenting demographic data?

I have a large dataset of people, and connected demographic data, like age, gender and place of residence. I want to present a typical person from this dataset, as a presentation technique. Should I ...
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### How do you pronounce BOBYQA?

This question might seem subjective, but I ask because there is some precedent on this site. I and my colleagues have always pronounced the name of this optimizer as "bobby cue ay" (which also gives ...
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### Rule of thumb for the number of significant digits to report

What is a good rule of thumb for the number of significant digits to report? Preferably, the rule of thumb is given in a citable publication. I am particularly interested in a rule that does not ...
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### What scientific field(s) studies how people interpret quantitative summaries and visualizations?

There's an abundance of well-known resources offering advice on data visualization. (E.g. Tufte, Stephen Few et al, Nathan Yau.) But to what field(s) might one turn to for answers to questions like ...
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### how to call the unit for count and ratio data

I am writing a table to present my data. One of the informatio nI want to show is the unit of the data, e.g. cm for Height and kg...
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### Displaying Ordinal Data - Means, Medians, and Mean Ranks

I have some ordinal data that is not normally distributed, so I decided to do non-parametric testing using the Mann-Whitney U Test. I am looking at differences between groups for seven scores - these ...
7k views

### How to choose a confidence level?

I often use a 90% confidence level, accepting that this has a greater degree of uncertainty than 95% or 99%. But are there any guidelines on how to choose the right confidence level? Or guidelines ...
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### Decriptive statistics for a large amount of times series

I have 1,000 individual company time series of a variable, say X, observed 500 times (weekly observations). I would like to describe how this variable behaves. A graphic presentation of each time ...
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### Average multiple precision recall curves

I have a binary classifier that I evaluate using cross validation. The classifier gives me a score for each observation and for each of the test sets I use a varying threshold to compute precision and ...
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### How to present the Bayesian approach

I am writing a dissertation in which I use maximum likelihood estimation and an alternative Bayesian approach. I have written up the maximum likelihood estimation approach. However, I need some advice ...
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### How to properly present McNemar's Test Statistics

I have read an article and I wonder if that is a proper way to present a McNemar's Test statistics. The study try to measure the change in knowledge before and after a lesson. They performed McNemar'...
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### How should I organize my poster presentation?

I am currently in the process of making a poster presentation and would like some advice (or reference to advice) about some of the aspects of the graphic. For examples posters I am talking about see ...