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Class XI
Subject- Economics, `
Statistics
CHAPTER-3
TOPIC- Collection of Data
(MODULE-20)
Topic : Types of Sampling( Methods of Sampling)
Restri
cted
Rand
om
Samp
ling
Random sampling- Refers to a method in which every item in the
universe has a known chance of being chosen for the sample.
Known as Probability Sampling
Independent of the person making the study.
No room for discrimination
Random sample a replica of the universe
