We are introducing the concept of a panel data and illustrate the example of panel data with python on the WHO births data set.
In this blog post we are introducing the concepts of log returns vs simple returns, realized volatility and realized variance.
In this article we are introducing the concept of cross sectional data. A cross sectional data example consists of a sample of units at a given point in time.
A time series is a collection of observations on at least one variable ordered along single dimension, time. time series forecasting is invaluable method.