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March 29, 2019

exploring your data


SUBJECT: Police Killings

This exercise involves you working with an already acquired dataset  to undertake the remaining three key steps of examining, transforming  and exploring your data to develop a deep familiarisation with its  properties and qualities. This spreadsheet  provides you with two contrasting worksheets showing snapshot details  of recorded deaths caused by US law enforcement agencies, from The  Guardian (“The Counted“) and the Washington Post (“Fatal Force“). For each dataset:

Examination: Articulate the meaning of the data  (its representativeness and phenomenon) and thoroughly examine the  physical properties (type, size, condition) noting down your  descriptions in each case. Compare what the two datasets offer and  contrast their differences.

Transformation: What could you do/would you need to  do to clean or modify the existing data? What other data could you  imagine would be valuable to consolidate the existing data?

Exploration: Use a tool of your choice (common  recommendations would be Excel, Tableau, R) to visually explore the two  datasets separately in order to deepen your appreciation of their  physical properties and their discoverable qualities (insights) to help  you cement your understanding of their respective value.

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