.Question 25Which populations would likely require a researcher to use a nonprobability sampling technique?1 pointAdolescents who report regular use of marijuanaIndividuals over age 70 who visit the senior center in your communityStudents in your research methods courseElected officials in your hometown

A) Discuss two types of each of probability and non-probability sampling that is used in research (4 pts).B) When is each method an appropriate choice of data collection? (4 pts)C) Discuss the difficulties of each method. (2 pts)

A researcher at a Canadian institution eligible to receive Agency funding wishes to determine the frequency of cannabis consumption among high school students in Canada. The researcher will create a website that includes a secure link to a survey for students wishing to participate in the research. For scientific reasons, only students who have already used cannabis will be invited to participate and respond anonymously to the survey (please answer all questions by YES or NO).Some REB members do not agree with the methodological decision of the researcher to exclude from the study students who have never used cannabis, because they believe that it will diminish the likelihood that the researcher can publish the results in a prestigious journal. Based on this reason, should the REB require that the researcher change the protocol?

To estimate the number of young female smokers in Canada, researchers randomly select 10 schools from all schools in a certain province. If a school is selected, all female students in that school are surveyed. What sampling technique is used?

A researcher at a Canadian institution eligible to receive Agency funding wishes to determine the frequency of cannabis consumption among high school students in Canada. The researcher will create a website that includes a secure link to a survey for students wishing to participate in the research. For scientific reasons, only students who have already used cannabis will be invited to participate and respond anonymously to the survey (please answer all questions by YES or NO).The researcher proposes to ask participants to provide minimal information about themselves, such as sex, gender, age, and postal code (indirect identifiers). However, the participants will not be required to provide direct identifiers such as their name and the researcher will not collect their IP address. Considering the information that will be collected, can the data be considered anonymous?

Why one should not go for sampling? It is less costly to administer than a census The person authorising the study is comfortable with the sample. Because the research process is sometimes destructive None of the above