How Data Happened by Unknown

How Data Happened by Unknown

Author:Unknown
Language: eng
Format: epub
Tags: Epub3
Publisher: W. W. Norton & Company


“Data Analysis,” 1960s–1990s

In 1974 the Princeton–Bell Labs mathematician John Tukey agreed to speak at the National Security Agency about “exploratory data analysis,” asking that the agency provide “2 screens and 2 projectors for large transparencies.”8 Long a scientific advisor to the NSA following his involvement with cryptography during World War II, Tukey had, since the 1940s, been creating new tools for exploring data, large and small, using all manner of statistical and graphical methods. Initially focused on paper tools for exploring data, he was at the forefront of the move to computers for graphing and analyzing data. Twenty-five years before, NSA’s Kullback had invited Tukey to a “symposium on the general problem of data storage and retrieval”—based in part on Tukey’s recommendation that the NSA look into the problem.9 The symposium was to consider what were the data storage and retrieval issues in general—and what were those particularly to the NSA.10

Less important than the still-classified work Tukey did were the attitudes toward statistics and data he encouraged within the NSA—and within the unclassified world. Tukey worked for decades to transform the practical statistical work on large data sets of the war into far more general use toolsets—and mindsets. In his career, he worked on everything from the census to missiles. The tools whose creation he encouraged and the graphical techniques he advocated such as the box-plot saturate contemporary data practices, including middle school standardized exams.

Informed by the large-scale data analysis needed during World War II, Tukey provided a programmatic statement of a changed approach to data and sought to make tools to realize it. In a 1962 manifesto, Tukey called for a new approach he dubbed “data analysis” that would be dedicated as much to discovery as to confirmation:

Data analysis, and the parts of statistics which adhere to it, must then take on the characteristics of a science rather than those of mathematics, specifically:

1. Data analysis must seek for scope and usefulness rather than security.

2. Data analysis must be willing to err moderately often in order that inadequate evidence shall more often suggest the right answer.

3. Data analysis must use mathematical argument and mathematical results as bases for judgment rather than as bases for proofs or stamps of validity.11



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