A researcher who uses a stratified sampling technique ____.
a. does not select elements from homogeneous subsets of a population
b. recognizes the extent that subsets that are homogeneous on stratified variables will
generally result in homogeneity on other variables as well
c. cannot estimate that a stratified sample is likely to be more representative on a
number of variables than a simple random sample
d. does not use probability sampling method
After you have identified a sponsor and sent a letter to a formal organization stating
your interest in research, a phone call is typically the next step in the process. You have
agreed upon a time and day for the phone call and at the appointed time, you call. The
director will not take your call. What should you do next?
a. forget that organization as a target of your research because if the director will not
take your call now, you cannot expect much from him once the research begins
b. keep calling back until your call is taken by the director
c. ask to speak the director’s assistant and make an appointment for a meeting
d. find another sponsor and see if you have better luck getting access to the director