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Randomized telephone survey
The feasibility of implementing such a sampling via telephone would be an exceptional idea, however utilizing the modality of the telephone would probably inadvertently narrow your sample to older seniors within the city who have not gotten rid of their land lines and/or converted to cell phones as of yet. This sampling methodology will probably exclude many of the poor residents of the city who are not privy to a land line and who choose to utilize a cell phone due to convenience and/or cost....
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