ANT371H1 : 3_pdfsam_TT220_1A_OCT04.pdf
Document Summary
Which of variables summarized in figure 3 could be normally distributed (assuming the graph was created using very large sample sizes)? (a) var1 only (b) var3 only (c) var2 and var4. When doing a random digit dial telephone survey it is important to roster all individuals at that telephone number and to randomly select one of the individuals to speak to. By doing this the researcher hopes to reduce which of the following? (a) sampling error (b) non-response bias (c) differences between the target and sampled population.
