Opinion polls. Pollsters regularly conduct opinion polls to determine the popularity rating of the current prime minister of Thailand. Suppose a poll is to be conducted tomorrow in which 2,000 individuals will be asked whether the prime minister is doing a good job or a bad job. The 2,000 individuals will be selected by random-digit telephone dialing and asked the question over the phone.
Please read and know how to collect data. It will be in the multiple choices.
Data
from a published source
Data
from a designed experiment
Data
from a survey
Data
collected observationally