Sample Survey, Call 1,000 random voters to ask which candidate they prefer for the upcoming election., Hand out a questionnaire to 200 random students to rate the cafeteria food., Mail a form about daily exercise habits to a random group of adults., Emailing a satisfaction score form to recent online shoppers., A streaming service emails a feedback questionnaire to 5% of its user base to rate a new interface design., Experiement, Give one group of sick patients a new real pill and another group a fake sugar pill (placebo) to see which group heals faster., Put one group of tomato plants in full sunlight and another group in the shade to test plant growth rates., Have players shoot hoops using a standard ball first, then a weighted ball, to compare accuracy scores., Giving three pots of identical flowers different amounts of plant food (0g, 5g, and 10g) to see which amount grows the tallest., Splitting a class into two groups; teaching one group with flashcards and the other with video lessons to compare test scores., Researchers randomly assign 100 patients with high blood pressure to two groups; one receives a new medication, while the other receives a placebo sugar pill., A scientist treats half of a corn crop with a new organic fertilizer and leaves the other half untreated to compare the total harvest weight., Observation, Count the number of cars that run a red light at a specific intersection during rush hour., Sit in a forest with binoculars to record how deer react when they hear a loud noise., Watch library patrons to see how long students stay on their laptops versus reading physical textbooks., Sitting at a street corner to count how many drivers wear seatbelts during the morning commute., Watching wild chimpanzees in the jungle and writing down how they share food., Measuring the daily coffee intake and resting heart rate of volunteers without telling them to change their habits., A marine biologist records the migratory paths and diving depths of 30 wild humpback whales using attached satellite tags.

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