Which of the following is an example of random selection?

• A. Assigning a number to each student in a class and using a random number generator to select participants for a survey
• B. Choosing the first five students who enter the classroom to participate in a survey
• C. Selecting students who volunteer to participate in a survey
• D. Picking students based on their grades to participate in a survey

Answer: (A)

Verified step by step guidance

1. Understand the concept of random selection: it means every individual in the population has an equal chance of being chosen.
2. Review each option to see if every student has an equal chance of being selected.
3. Option 1 assigns a number to each student and uses a random number generator, which ensures equal probability for all students.
4. Options 2, 3, and 4 involve selection based on order, volunteering, or grades, which do not give every student an equal chance.
5. Conclude that the example of random selection is the one where a random number generator is used to select participants.