question archive Polly Petunia is Chief Horticulturalist for the Southwest region, encompassing Arizona, New Mexico, and Texas
Polly Petunia is Chief Horticulturalist for the Southwest region, encompassing Arizona, New Mexico, and Texas
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Polly Petunia is Chief Horticulturalist for the Southwest region, encompassing Arizona, New Mexico, and Texas. She wants to survey amateur gardeners in her region to determine what, if any, water conservation practices they employ in their home gardening. Polly sends her survey to 150 randomly selected gardeners in each state. Polly is using:
a)purposive sampling,
b)proportional stratified sampling,
c)systematic sampling,
d)stratified random sampling.
which is correct a,b,c,or d
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Answer:
Here she sent 150 surveys to each of the states. The kind of sampling she used is
D) starified random sampling.
Starified random sampling means initially the population is divided into strata(groups) and then then randomly selected data points for surveying.
Here polly also did the same thing by stratifying the population into states and them selecting random 159 people for surveying.
Therefor the answer is option D. Stratified random sampling
