designing a study\nquiz active\n1 2 3 4 5 6 7...
designing a study\nquiz active\n1 2 3 4 5 6 7 8 9 10\ntimeremaining 51:28\nresearchers call random radio listeners on the phone to rank five different popular songs. this research helps radio stations decide which songs to play more often. this method of gathering data is classified as\no a census.\no a sample survey.\no an experiment.\no an observational study.
Answer
# Brief Explanations:
A census involves collecting data from an entire population. An experiment involves manipulating variables. An observational study just observes without intervention. Here, researchers are calling a subset (random radio - listeners) of the population of all radio - listeners to gather data, which is characteristic of a sample survey.
# Answer:
B. a sample survey