MATH_225N_Week_7_Lab.

MATH_225N_Week_7_Lab. The sampling method used for week 5 lab assignment to collect heights was the convenience sampling. Convenience samples can provide rich qualitative information. It requires significantly less time to question 40 people as they leave a grocery store than a plan, design, and collect a random, representative sample of a population. A type of non-probability sampling method where the sample is taken from a group of people easy to contact or to reach. That involves the sample being drawn from that part of the population that is close to hand. The best way of reducing bias in convenience sampling is to use it along with probability sampling. Since it is usually biased, probability sampling gets the measurement parameter with it to keep this bias under check. Even though convenience sampling can be easy to obtain, its disadvantages usually outweigh the advantages. This sampling technique may be more appropriate for one type of study (Davies HT, Crombie IK).