Examlex
The Earth's atmosphere blocks most forms of electromagnetic radiation from entering,except for ____________________ and ____________________.
Stratified Random
This refers to a sampling method where the population is divided into subgroups (strata) that share similar characteristics, and a random sample is then drawn from each stratum.
Achievement Tests
Standardized tests designed to assess how much knowledge and skills a person has acquired in a specified area.
Haphazard Sampling
A non-systematic sampling method where items or individuals are selected randomly in an unplanned way, without any specific pattern.
Simple Random
A sampling method in which every member of a population has an equal chance of being selected for the sample.
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