surrealpatch/util/math/trimean.go
2021-12-14 08:13:19 +00:00

29 lines
776 B
Go

// Copyright © 2016 SurrealDB Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package math
import "math"
func Trimean(vals []float64) float64 {
if len(vals) == 0 {
return math.NaN()
}
q1, q2, q3 := Quartile(vals)
return (q1 + (q2 * 2) + q3) / 4
}