What type of sampling is being used when the school board of an entire school district randomly selects 8 schools and interviews all the teachers in those schools?

• Systematic sampling

• Cluster sampling

• Stratified sampling

• Simple random sampling

What type of sampling is represented when the school board secretary stops some teachers as they leave for lunch to interview them?

• Convenience sampling

• Cluster sampling

• Stratified sampling

• Simple random sampling

What type of sampling is used when the school board selects every 5th school on the alphabetical list?

• Simple random sampling

• Stratified sampling

• Systematic sampling

• Cluster sampling

What type of sampling is represented when the school board randomly selects 75 teachers using a random number generator?

• Systematic sampling

• Cluster sampling

• Stratified sampling

• Simple random sampling

What type of sampling is represented when the school board selects 6 elementary schools, 2 middle schools, and 1 high school to interview all the teachers?

• Cluster sampling

• Stratified sampling

• Convenience sampling

• Systematic sampling

What type of sampling is used when a school administrator selects to interview 10% of students randomly in each grade?

• Simple random sampling

• Systematic sampling

• Stratified sampling

• Cluster sampling

What type of sampling is being used when test screenings are done by interviewing every 20th person leaving the theater?

• Cluster sampling

• Systematic sampling

• Stratified sampling

• Simple random sampling

What two sampling methods are being used when the school board selects 2 teachers from each grade level at 9 randomly picked schools? (multistage sampling method)

• Cluster, then Stratified sampling

• Cluster, then SRS sampling

• Convenience, then systematic sampling

• Stratified, then Cluster sampling

Income is a ​variable of type ?​ ​ (a)   ​ (b)  

• quantitative
• continuous
• qualitative
• discrete
• nominal
• ordinal

Political party affiliation is a ​variable of type ?​ ​ (a)   ​ (b)  

• quantitative
• continuous
• qualitative
• discrete
• nominal
• ordinal