par Basetsana Shela Il y a 6 années
235
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par Team247 SASCMP
par Lisbeth Mishelle Avila Napa
par Alanna King
par sheri okland
Cluster sampling -Groups identified within the population are heterogeneous -Each cluster stands an equal chance of being included in the sample -The sample was used to obtain a nationally representative sample of students in grades 8-10