In order to select a stratified random sample, a researcher would have to know_____
a. the characteristics of individuals in the population and the relative frequency of those characteristics
b. the names of all the people in the population
c. the phone numbers of the people in the population
d. all of these
A
Strata are defined as characteristics of the members of a population. They exist in various proportions and the researcher would have to know the strata and their relative proportions in the population in order to sample individuals using stratified random sampling from the population.
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Fill in the blank(s) with correct word
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