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A data frame is a tabular data structure. Usually, it contains data where rows are observations and columns are variables of various types. While "data frame" or "dataframe" is the term used for this concept in several languages (R, Apache Spark, deedle, Maple, the pandas library in Python and the DataFrames library in Julia), "table" is the term used in MATLAB and SQL.

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How to add a calculated column in a Pandas dataframe?

I have a dataframe with air quality data from 2016 to 2020. … These are the first lines of the dataframe. …
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