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Because column names are stored as an index, these are not required to be unique. [9]: 103–105 If data is a Series, then data['a'] returns all values with the index value of a. However, if data is a DataFrame, then data['a'] returns all values in the column(s) named a.
Given a function that accepts an array, a range query (,) on an array = [,..,] takes two indices and and returns the result of when applied to the subarray [, …,].For example, for a function that returns the sum of all values in an array, the range query (,) returns the sum of all values in the range [,].
The pandas package in Python implements this operation as "melt" function which converts a wide table to a narrow one. The process of converting a narrow table to wide table is generally referred to as "pivoting" in the context of data transformations.
Wes McKinney is an American software developer and businessman. He is the creator and "Benevolent Dictator for Life" (BDFL) of the open-source pandas package for data analysis in the Python programming language, and has also authored three versions of the reference book Python for Data Analysis.
Michael Anton, Trump’s pick for policy director at the State Department, wrote a 2016 essay criticizing racial diversity, Muslims and immigration.
Selecting the target range depends on the nature of the data. The general formula for a min-max of [0, 1] is given as: [3] ′ = () where is an original value, ′ is the normalized value. For example, suppose that we have the students' weight data, and the students' weights span [160 pounds, 200 pounds].
The diversity of Muslims in the United States is vast, and so is the breadth of the Muslim American experience. The following animated videos depict the experiences of nine Muslim Americans from across the country who differ in heritage, age, gender and occupation.
The Kenneth G. Langone Stock Index From January 2008 to May 2008, if you bought shares in companies when Kenneth G. Langone joined the board, and sold them when he left, you would have a -0.8 percent return on your investment, compared to a -5.0 percent return from the S&P 500.