Interpreting Confidence Intervals – new d3.js visualization

Posted by Kristoffer Magnusson on 2014-11-28 19:13:00+01:00 in D3.js

Tagged as D3.js confidence intervals statistics visualization

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Understanding confidence intervals – visualization. By Kristoffer Magnusson

I just published a new interactive visualization in my series of basic statistical concepts and techniques. This time I have tried to explain confidence intervals for means. This visualization shows a simulation of repeated sampling from a normal distribution with mean zero and a standard deviation of two. I also show the sampling distribution of the width of CIs, which follow scaled chi-distribution. You can change the confidence level and sample size to see how the CIs change.

Check out it here:

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About Kristoffer Magnusson

I'm a clinical psychologist from Sweden with a passion for research and statistics. My Ph.D. thesis focuses on a mix of therapist effects, psychotherapy, and gambling problems. You can read the thesis here: Methodological issues in psychological treatment research.

This is my personal blog about psychological research and statistical programming with R.


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