data research

The major difference between a stratum and a cluster is that the elements in a stratum are similar in at least one aspect, while the elements in a selected cluster may not represent the elements in the unselected clusters. ( A= True, B= False) Professor Caroline Jackson studied why people joined a small extremist political organization dedicated to right-wing ideas. She first interviewed a recent recruit Pete and asked him to introduce her to other members of the organization. She then interviewed other individuals in the organization introduced by Pete. This is an example of A. convenient sampling B. haphazard sampling C. judgment sampling D. snowball sampling E. quota sampling Professor Georganne Smith undertook a national survey of 3,000 U.S. households. Smith felt that the topic under investigation would produce a low response rate. To increase the response rate, what practical advice would you give Dr. Smith? A. offer each household a reward of $500 for returning the survey B. Send the questionnaire to each household by postal mail and by email C. use commemorative stamps for the outgoing mail and a self-addressed, stamped envelope for the return mail D. increase the sample size from 3,000 to 30,000 E. use hand delivery or pick up To select a systematic sample of 1,000 on a roster for 200,000 property owners in a block obtained from NYC's Department of Finance, a researcher would take _ case after a random start/pick. A. 20th B. 100th C. 150th D. 200th E. 500th