Examlex
The text points out that the amount of sampling error introduced by random selection changes with the size of the sample and with the homogeneity of the population from which it is selected. Taking these points into account, explain how it is that stratified sampling can result in less sampling error that multi-stage cluster sampling. After all, isn't random selection random selection, no matter which type of sampling is used?
Medical Doctor
A professional who practices medicine, which involves promoting, maintaining, or restoring health through the study, diagnosis, prognosis, and treatment of disease, injury, and other physical and mental impairments.
PhD
An abbreviation for Doctor of Philosophy, a doctoral degree awarded for advanced study and original research in a specified field.
WHO
The World Health Organization, an international body responsible for public health concerns.
Infirmary
A place in an institution like a school or prison where medical care is provided.
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