Regression Plots

Regression is a technique in which we estimate the relationship between a dependent variable (mostly plotted along the Y – axis) and an independent variable (mostly plotted along the X – axis). Given a dataset, we can assign independent and dependent variables and then use various regression methods to find out the relation between these variables. Here, we will only cover linear regression; however, Seaborn provides a wider range of regression functionality if needed.

The regplot() function offered by Seaborn helps to visualize linear relationships, determined through linear regression. The following code snippet gives a simple example:

import numpy as np
import seaborn as sns
x = np.arange(100)
# normal distribution with mean 0 and a standard deviation of 5
y = x + np.random.normal(0, 5, size=100) 
sns.regplot(x, y)

The regplot() function draws a scatter plot, a regression line, and a 95% confidence interval for that regression, as shown in...