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mondash/math.go

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package main
import (
"math"
"sort"
)
func absoluteDeviation(values []float64) []float64 {
medianValue := median(values)
deviation := make([]float64, len(values))
for i := range values {
deviation[i] = math.Abs(values[i] - medianValue)
}
return deviation
}
func median(values []float64) float64 {
sort.Float64s(values)
if len(values) == 1 {
return values[0]
}
// If even, take an average
if len(values)%2 == 0 {
return 0.5*values[len(values)/2] + 0.5*values[len(values)/2-1]
}
return values[len(values)/2-1]
}