Types of studies | AP Statistics | Khan Academy

Title:
Types of studies | AP Statistics | Khan Academy
Description:

Sal distinguishes between experiments and observational studies, and further describes types of observational studies: retrospective, prospective, and sample surveys.

View more lessons or practice this subject at https://www.khanacademy.org/math/ap-statistics/gathering-data-ap#sampling-observational-studies

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Video Language:
English
Team:
Khan Academy
Duration:
05:19
http://www.youtube.com/watch?v=zmXBbHDUgY4
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Format: Youtube
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