AP Comp Science: Unit 5

Information

the collection of facts and patterns extracted from data

Metadata

data about data

Cleaning Data

a process that makes the data uniform without changing its meaning (e.g., replacing all equivalent abbreviations, spellings, and capitalizations with the same word)

Data Filtering

choosing a smaller subset of a data set to use for analysis, for example by eliminating / keeping only certain rows in a table

Correlation

a relationship between two pieces of data, typically referring to the amount that one varies in relation to the other.

Citizen Science

scientific research conducted in whole or part by distributed individuals, many of whom may not be scientists, who contribute relevant data to research using their own computing devices.

Crowdsourcing

the practice of obtaining input or information from a large number of people via the Internet.

Data Bias

data that does not accurately reflect the full population or phenomenon being studied

Big Data

extremely large and complex sets of data that are too vast to be easily collected, stored, processed, or analyzed using traditional data-processing methods.

Open Data

data that is freely available to the public to access, use, share, and redistribute, with little or no restrictions.