Question

question #3
an internet site includes a poll to their web page asking visitors to identify new features that they would use.
which type of sampling is used?
o convenience
o random
o cluster
o stratified
question #4
a statistics student wants to determine the average gpa of the students at their school. one morning, the student stands at the entrance to the school and asks the first 50 students they see what their gpa is.
what sampling technique was used?
o stratified random sampling
o random sampling
o convenience sampling
o cluster sampling

Explanation:

Question #3

Convenience sampling uses easily accessible individuals. Here, the poll is on a web - page, and visitors (who are easily accessible to the website) are asked. Random sampling would require a random selection method (like a random number generator). Cluster sampling divides the population into clusters and selects some clusters. Stratified sampling divides the population into strata and samples from each stratum.

Convenience sampling is when the sample is chosen because it is easy to obtain. The student is just asking the first 50 students they see (easily accessible). Stratified random sampling would involve dividing the student population into subgroups (strata) and sampling from each. Random sampling would use a random selection process (not just the first ones seen). Cluster sampling would involve dividing the population into clusters and selecting some clusters.

Answer:

Convenience

Question #4