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menduz/stddev.dwl

Created November 6, 2017 14:18
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Standard deviation in DataWeave
Raw
stddev.dwl
fun stdDev(values: Array<Number>): Number = do {
var average = avg(values)
var squareDiffs = values map do {
var diff = $ - average
---
diff * diff
}
---
sqrt(avg(squareDiffs))
}
---
stdDev([1,2,1,2,1,2,1,4])
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