From the course: Python Data Analysis
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Overview: The structure of data - Python Tutorial
From the course: Python Data Analysis
Overview: The structure of data
- [Instructor] So far, we've been casual in the way we speak about data. As we move into the second part of this course, we should get more precise with our terminology. The word data is plural. That's appropriate because we're usually interested in the variability of our observations. We need to establish how things are different from each other. So a data set is like a catalog or a collection. For instance, for a planetary scientist, the data set of interest would be the planets of the solar system. The data set consists of cases, the planets, and each case has attributes called variables. For instance, the mass of the planet, or the period of its orbit around the sun. It is standard practice to organize data in a data frame, in effect a table where each row or record refers to one case and each column or field to one variable. It is not by chance that the Pandas table object is also called a data frame. Variables can be quantitative, represented by a number, or categorical, a…
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