books sample identification
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# Arifat Ain Devali
# On the definition of the sample and its types
# Definition of the sample, its types and size
# The well-known Ain al-Arab
# Define probability samples
# Definition of rented eye
# Define a random sample in statistics
# Definition and selection of samples
# Definition of the intentional sample
# Definition of the eye and envy
# Cluster sample definition
# Define the study sample
# Definition of Ain Al-Hanash
