# Sample size calculation + experimental design
**URL:** https://discourse.julialang.org/t/sample-size-calculation-experimental-design/27433
**Category:** Statistics
**Created:** [August 11, 2019, 11:08pm UTC](https://discourse.julialang.org/t/sample-size-calculation-experimental-design/27433 "2019-08-11T23:08:55Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Crghilardi](https://discourse.julialang.org/u/Crghilardi)
#### Post date: [August 11, 2019, 11:08pm UTC](https://discourse.julialang.org/t/sample-size-calculation-experimental-design/27433/1 "2019-08-11T23:08:55Z")
I started to write a small function that I use somewhat regularly to calculate sample size from coefficient of variation. I checked JuliaStats/StatsBase to see if any sample size functionality was included and I did not see anything.
I figured a thread here would be a helpful paper trail for anyone else.
Further searching turned up a few repos including:
[https://github.com/PharmCat/ClinicalTrialUtilities.jl](https://github.com/PharmCat/ClinicalTrialUtilities.jl)
[https://github.com/Testispuncher/ClinicalTrialSampleSize.jl](https://github.com/Testispuncher/ClinicalTrialSampleSize.jl)
[https://github.com/experimental-design/ExperimentalDesign.jl](https://github.com/experimental-design/ExperimentalDesign.jl)
[https://github.com/phrb/ExperimentalDesign.jl](https://github.com/phrb/ExperimentalDesign.jl)
Are there any packages I missed?
The experimental-design org seems to be fairly recent and uses at least 1.0.
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### Author:  [@phrb](https://discourse.julialang.org/u/phrb)
#### Post date: [August 28, 2019, 11:35pm UTC](https://discourse.julialang.org/t/sample-size-calculation-experimental-design/27433/2 "2019-08-28T23:35:32Z")
Hi! I’ve been dedicating more time to ExperimentalDesign.jl recently, and I’m interested in collaborating!