19. which of the following is an example of r...
19. which of the following is an example of random sampling techniques?\na. taking the names of every person in a telephone book\nb. generating a list of numbers by picking numbers out of a hat and matching these numbers to names in the telephone book\nc. taking every twentieth name from a list of everybody in the telephone book\nd. taking the first ten names from each page of the telephone book
Answer
# Brief Explanations:
Random sampling involves each member of the population having an equal chance of being selected. In option B, picking numbers out of a hat is a random process and matching them to names in the telephone - book gives each name an equal chance of being selected. Option A is a census (taking all names). Option C is systematic sampling (taking every twentieth name). Option D is a form of convenience sampling (taking the first ten names from each page).
# Answer:
B. Generating a list of numbers by picking numbers out of a hat and matching these numbers to names in the telephone book