# Kaufman Efficiency Indicator

## [Kaufman Efficiency Indicator](https://docs.origami.tech/function/technical-analysis/..#kaufman-efficiency-indicator)

<mark style="color:red;">`er(`</mark>[<mark style="color:blue;">`candles`</mark>](https://docs.origami.tech/function/functions/candles)<mark style="color:red;">`: List[[`</mark>[<mark style="color:blue;">`Candle`</mark>](https://docs.origami.tech/structures#candle)<mark style="color:red;">`]], period: int = 14, column: str = "close") -> List[Decimal]`</mark>