I have a vector of continuous values say 1000 heights with
heights <- rnorm(1000, mean = 170, sd = 10)
which I can plot into a histogram. But I was wondering is there any package or function that allows an approximation of the histogram into a smooth distribution curve and then find the cutoff height where the area under curve would be equal to 0.8?
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Jeff238
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1This looks like a similar question: https://stackoverflow.com/questions/48212824/shaded-area-under-density-curve-in-ggplot2 – Desmond Apr 28 '21 at 15:13
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I was wondering if AUC = 0.8 is equal to finding the 20th percentile of my data? – Jeff238 Apr 28 '21 at 15:43
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Also the answer in that post doesn't offer the cutoff value which I need more than the graphical representation of the cutoff? – Jeff238 Apr 28 '21 at 16:10