Question

populations, samples and hypothesis this quiz will test your knowledge on populations, samples and hypothesis. click the start button to begin. value: 3 which of the following data collection methods involves studying individuals without making an attempt to influence the results? choose the best answer. a. sample survey b. causation c. observational study d. experiment

Explanation:

A sample survey collects data through questionnaires etc. Causation focuses on cause - effect relationships. An experiment manipulates variables to observe effects. An observational study watches and records without influencing the subjects.

Answer:

C. observational study