Question

for each item, choose the data collection technique that best matches the situation: (a) survey, (b) observation, (c) counting, (d) measurement, and (e) interview.

1. a researcher stands at a busy intersection and records the number of red cars that pass by in 30 minutes.
2. a school principal sends out questionnaires to all teachers to gather feedback on the new curriculum.
3. a biologist measures the length of 50 fish caught in a lake to study their growth patterns.
4. a journalist interviews eye witnesses to a car accident to gather information for a news report.
5. a teacher records the number of students present in the classroom each day for a week.
6. a market researcher conducts one - on - one conversations with shoppers to understand their preferences for a new product.
7. a meteorologist uses instruments to measure temperature and humidity at various locations across a city.

Explanation:

1. The researcher is counting the number of red cars, so it's counting.
2. Sending questionnaires is a survey.
3. Measuring the length of fish is measurement.
4. Interviewing eyewitnesses is an interview.
5. Recording the number of students is counting.
6. One - on - one conversations with shoppers to understand preferences is an interview.
7. Using instruments to measure temperature and humidity is measurement.

Answer:

1. c. counting
2. a. survey
3. d. measurement
4. e. interview
5. c. counting
6. e. interview
7. d. measurement