Question

Nico wanted to determine the number of students in his school who buy school lunch. He walked around the cafeteria one lunch period looking to see whether every fifth person in the cafeteria purchased lunch or brought their own. Which method did he use to collect his data?

Answer 1

Answer:

D. Observational study

Step-by-step explanation:

We are given that Nico looked around the cafeteria during the lunch to see whether people purchased lunch or brought their own.

It is known that:

1. 'Survey' means to question a wide variety of population about their views on a particular issue.

2. 'Simulation' refers to act out a situation or process in order to find some conclusions.

3. 'Experiment' represent a scientific procedure undertaken in demonstrate a fact or test a hypothesis.

4. 'Observational study' is to study the samples without the variables being under the control of the observer.

Answer 2

Answer:

Observational Study

Step-by-step explanation:

He observed (watched) people. If he were to ask them it would be a survey. If it were an experiment he would have conducted tests. If it were a simulation he would've done a simulation instead of watching people.

Because he watched people it was an observational study.