to find how high school students feel about hot lunches, adam walks to the nearest high school and gives a…

to find how high school students feel about hot lunches, adam walks to the nearest high school and gives a survey postcard to every twentieth student that enters the building. he asks the students to mail the postcard in if they choose to participate in the study. why might the method used be biased? asking every twentieth student does not accurately represent the student population. it is likely that student opinions in one particular high school do not accurately represent the opinions of all high school students. students that take the time to complete the survey and mail it in probably feel strongly about hot lunches. done

to find how high school students feel about hot lunches, adam walks to the nearest high school and gives a survey postcard to every twentieth student that enters the building. he asks the students to mail the postcard in if they choose to participate in the study. why might the method used be biased? asking every twentieth student does not accurately represent the student population. it is likely that student opinions in one particular high school do not accurately represent the opinions of all high school students. students that take the time to complete the survey and mail it in probably feel strongly about hot lunches. done

Answer

Brief Explanations:

  1. Sampling only from one high - school limits representativeness. Different schools may have different student demographics, food preferences etc.
  2. Self - selection bias occurs as only students who feel strongly will take the time to complete and mail the postcard. Sampling every twentieth student can be a form of systematic sampling and may not be the main source of bias here compared to the other two factors.

Answer:

It is likely that student opinions in one particular high school do not accurately represent the opinions of all high school students. Students that take the time to complete the survey and mail it in probably feel strongly about hot lunches.