【Econometrics】Data Types

Data Types

In the last post, we went through a couple of examples of econometric questions. In this post, we will walk through three major data types used for econometric analyses.

I. Cross-Sectional Data

Cross-Sectional data is data which describes the activities of "entities" (individuals, firms, or other units) at a given point in time.

Example 1. Data Format (Numbers are arbitrary)

Example 2. Top Gainers, Yahoo Finance (2020/06/16)

Example 3. NBA Season Leaders (2020/06/16)

II. Time Series Data

Time Series Data is data which describe the movement of a variable over time. They can be daily, weekly, monthly, quarterly, annual or even picosecond level.

Example 4. Data Format (numbers are arbitrary)

Example 5. Global Mean Temperature, NASA (03/23/2020)

III. Panel (Longitudinal) Data

Panel or Longitudinal Data is a combination of the above two data types. 

Example 6. Data Format (numbers are arbitrary)

Example 7. COVID19 Cases over time, Schroders (03/23/2020)

Example 8. Korean Composite Stock Price Index (KOSPI) 200, Lorenz Curve

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