Methods of Collecting Data

Ms. Marianne wanted to know her students' opinions on the new schedule at school. So she randomly selected 2 students from each of her classes to survey.
Assuming that all of her classes are roughly the same size, this is a form of:

• Convenience Sampling
• Simple Random Sampling
• Stratified Sampling
• Cluster Sampling

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 50 blocks and survey all households on each selected block. 
This is an example of:

• Simple Random Sampling
• Stratified Sampling
• Cluster Sampling
• Systematic Sampling

Disneyland often surveys its guests as they exit a restaurant during their visit to assess the quality of their dining experience.
The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest. This is a form of:

• Simple Random Sampling
• Stratified Sampling
• Convenience Sampling
• Systematic Sampling

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys, so she randomly selects five students from the class to survey, paying no attention to their gender.
This is a form of:

• Cluster Sampling
• Systematic Sampling
• Stratified Sampling
• Simple Random Sampling

Ms. Marianne wanted to know students' opinion on the new schedule at school. She places all of her students' names in a container and randomly picks out 20 names. She surveys those students whose names have been chosen.
This is an example of:

• Convenience Sampling
• Systematic Sampling
• Simple Random Sampling
• Convenience Sampling

Political webpages often allow their readers to rate whether they strongly agree, agree, disagree, or strongly disagree with the President's decision on any given issue. This is a form of:

• Convenience Sampling
• Systematic Sampling
• Stratified Sampling
• Cluster Sampling

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys. She randomly selects 4 girls and 1 boy to survey.
This is a form of:

• Simple Random Sampling
• Convenience Sampling
• Stratified Sampling
• Systematic Sampling

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys. She selects a random student to start then picks the student in every 5th seat.
This is a form of:

• Simple Random Sampling
• Systematic Sampling
• Convenience Sampling
• Stratified Sampling

You are determining the favorite fast food restaurant of students at your school. Which of the following is the most likely to provide unbiased data?

• Survey everyone leaving the McDonald's close to school.
• Survey a group of friends sitting together in the cafeteria
• Survey everyone in a few randomly chosen Discovery classes.
• Survey a group of students at the Gym.

Farmer Joe's apple tree farm is set up in 100 rows.  He counts the number of apples produced on every 10th row to estimate the number apples produced on the whole farm.  This is _____________ sampling.  

• Random
• Stratified
• Convenience
• Systematic