# `Macaw.Data.Operations.Aggregates.Slope` [๐Ÿ”—](https://github.com/dcoai/macaw_data/blob/v0.5.3/lib/macaw/data/operations/aggregates.ex#L431) `slope`: the least-squares slope of the points the readings are (spec/04 ยง5): a number `v` at place `i` is the point `[i, v]`, a reading `[x, y]` (or `{x, y}`) the point itself. `nil` for fewer than two points, or when every `x` is equal. --- *Consult [api-reference.md](api-reference.md) for complete listing*