Interpreting Confidence Intervals – new d3.js visualization

November 28, 2014
By

(This article was first published on R Psychologist, and kindly contributed to R-bloggers)

Understanding confidence intervals – visualization

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: rpsychologist.com/d3/CI/

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