Box Plot Styling Mean and Standard Deviation

Mix.install([
  {:plotly_ex, "~> 0.3"},
  {:kino, "~> 0.18"}
])

Section

boxmean: true draws a dashed line at the mean. boxmean: "sd" draws the mean line and shades ±1 standard deviation.

alias Plotly.{Figure, Box}

data = [2.37, 2.16, 4.82, 1.73, 1.04, 0.23, 1.32, 2.91, 0.11, 4.51,
        0.51, 3.75, 1.35, 2.98, 4.50, 0.18, 4.66, 1.30, 2.06, 1.19]

Figure.new()
|> Figure.add_trace(Box.new(y: data, name: "Mean line only", boxmean: true))
|> Figure.add_trace(Box.new(y: data, name: "Mean + SD",      boxmean: "sd"))
|> Figure.update_layout(title: "Box Plot — Mean and Standard Deviation")
|> Plotly.show()