エラーバーは散布図と相性が良好です。

ScottPlot.Plot myPlot = new();

int points = 30;

double[] xs = Generate.Consecutive(points);
double[] ys = Generate.RandomWalk(points);
double[] err = Generate.RandomSample(points, 0.1, 1);

var scatter = myPlot.Add.Scatter(xs, ys);
var errorbars = myPlot.Add.ErrorBar(xs, ys, err);
errorbars.Color = scatter.Color;

myPlot.SavePng("demo.png", 400, 300);