For each scenario, identity what type of sampling was used to obtain the sample.
ID: 3251241 • Letter: F
Question
For each scenario, identity what type of sampling was used to obtain the sample. Explain whether or not you think the sample will be representative of the population it was sampled from: 8. Elvira surveys the first 60 students in the lunch line to determine if students at the school are satisfied with school lunch. Type of sample: Representative? Explain. 9. Elvira selects every 5^th student in the lunch line to determine if students at the school are satisfied with school lunch. Type of sample: Representative? Explain. 10. Elvira randomly selects 7 different tables in the lunchroom and surveys every student on the table to determine if students at the school are satisfied with school lunch. Type of sample: Representative? Explain. 11. Elvira assigns every student in the school a number and randomly selects 60 students to survey to determine if student at the school are satisfied with school lunch. Type of sample: Representative? Explain. 12. Elvira wants to determine if students are satisfied with school lunch. She leaves surveys on a table for students to answer as the walk by. Type of sample: Representative? Explain. 13. Elvira wants to determine if students are satisfied with school lunch. She wants to include input from each grade level at the high school. She randomly surveys 25 freshman, 25 sophomores, 25 juniors, and 25 seniors. Type of sample: Representative? Explain.Explanation / Answer
8.) Quota Sample.
No, its not representative.
Reason in this type of sampling the researcher deliberately sets the proportions of levels or strata within the sample. This is generally done to ensure inclusion of a particular segment of the population. The researcher in this sets the quota independent of the population characteristic and thus it is not representative.
9.). Stratified Sample.
Yes, it is representative.
10.) Random Sample
Yes, it is representative.
11.) Stratified Sample
Yes, it is representative.
12.) Convenience Sample.
No, it is not representative.
Reason This is accidental sampling technique and is just a matter of taking what you get.
13.) Purposive Sample.
No, it is not representative.
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