What is sampling?, Studying a part of the population, Studying eveyone, What is a population?, random numbers, All people in the study, Why do we use sampling?, To reduce cost and time, to avoid research, A researcher wants high accuracy but has limited time and budget.which is best choice?, convenience sampling, Random sampling, Which situation BEST represents a biased sample?, Selecting students randomly from a full list, Asking students from different faculties, Surveying only active social media users, using a large sample size, A study divides students into groups (male/female) and then selects randomly from each group. this is an example of , Stratified sampling, convenience sampling, Systematic sampling, cluster sampling, A researcher selects students by choosing every 10th name from a list.What type of sampling is this? , Random sampling, Systematic sampling, A good sample must be:, Representative of population, biased, Which one is a census?, Studying everyone, studying 100 people, A researcher selects only students who are present in class on the day of the survey. What is the MAIN problem with this sampling?, systematic, too expensive, time-consuming, It is biased (not representative).

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