Confidence bands

Improving Your Data Visualizations in Python

Nick Strayer

Instructor

Continuous estimation functions

Estimates over a continuous axis
Often over time
Have uncertainty and should be plotted as such.

sound waves

A wavey series of repeated grey confidence intervals along a time x-axis

A continuous ribbon representing confidence intervals along a time x axis

# Set lower and upper bounds of ribbon
plt.fill_between(x='day', y1='lower', y2='upper', data=cinci_so2)

# Add point-estimate reference line
plt.plot('day', 'mean', 'w-', alpha=0.5, data=data)

A jagged blue confidence band with a white center line

A lot of colorful confidence bands overlaid that is difficult to read

A lot of colorful confidence bands separated into a grid of charts with one band per chart

Two solid overlaid bands with top band covering up behavior of lower band

Two semi-transparent overlaid bands with behavior of lower band visible through top band

Let's draw some bands!

Improving Your Data Visualizations in Python