Question

match each of the following to the type of sampling technique used: - the school district randomly selects 3 high schools in the district and then collects data on psat score for all 9th graders in those districts. - the school district collects data on the psat score of the first 50 scores that are entered into the system. - the school district divides the 9th grade students by high school attended and then collects data from a random sample of 9th graders from each high school. - a school district has a list of all of its 9th grade students. they then collect data on the psat score of 30 randomly selected students. - the school district has a list of all 9th grade students and then collects data on the psat score of every 10th student on the list. a. simple random sample b. stratified sample c. systematic sample d. convenience sample e. cluster sample

Explanation:

1. Selecting 3 high - schools and all 9th - graders in them is cluster sampling as the high - schools are clusters.
2. Collecting data on the first 50 scores is convenience sampling as it's based on ease of access.
3. Dividing students by high - school and sampling from each is stratified sampling as the strata are high - schools.
4. Randomly selecting 30 students from a list is simple random sampling as each student has an equal chance.
5. Selecting every 10th student from a list is systematic sampling as it follows a fixed interval.

Answer:

1. e. cluster sample
2. d. convenience sample
3. b. stratified sample
4. a. simple random sample
5. c. systematic sample