What does univariate and bivariate mean in more detail?


#1

Question

In the context of this exercise, what does univariate and bivariate mean in regards to datasets?

Answer

Univariate

Univariate datasets are essentially one-dimensional datasets, which have only one variable. For example, a dataset with Temperatures.

These types of datasets are used for distributions, which you may have worked with in the other lessons using histograms.

When plotting univariate datasets, KDE plots are usually preferred over histograms, because they do not use bins, and have a smoother and more accurate curve.

Bivariate

Bivariate datasets are two-dimensional datasets, having two variables. For example, we may have a dataset with the variables: Temperature and Amount of Ice Cream Sold. The variables can be dependent on each other, or they can even be independent from each other.

Usually, we use bivariate datasets to determine if there is a relation between the two variables. We typically visualize this using scatterplots, which are used to determine associations between the values.