for MADAM PROFESSOR

  

Discussion 2

APA FORMAT 

300-500 words

What are the advantages and disadvantages of probability-based sampling designs compared with nonprobability-based designs? 

Could any of the studies that are described in this chapter with a nonprobability-based design have been conducted instead with a probability-based design?

What difficulties might have been encountered in an attempt to use random selection?

How would you discuss the degree of confidence you can place in the results obtained from research using a nonprobability-based sampling design?