Sampling and Populations Quiz

In a school, Zoe wants to understand the preferences of her classmates regarding lunch options. She decides to survey a few students from her class. What is the main difference between the group of students she surveyed and the entire class?

• A sample is irrelevant to the population.

• A sample is always larger than the population.

• A sample includes all members of a population.

• A sample is a subset of a population.

In a school project, Arjun decided to survey his classmates about their favorite sports. However, he only asked his friends who are all on the basketball team. Which of the following describes a biased sample?

• A sample that includes all members of the population.

• A sample that does not represent the population.

• A sample that is selected randomly.

• A sample that accurately reflects the population.

Which sampling method allows for the calculation of confidence limits?

• Probability sampling.

• Haphazard sampling.

• Convenience sampling.

• Non-probability sampling.

Mason is conducting a survey for his class project and wants to ensure that his sample accurately represents the opinions of all students in his school. What is representativeness in sampling?

• The cost of conducting a survey.

• The method used to select samples.

• The degree to which a sample reflects the population.

• The total number of samples collected.

Noah is conducting a survey in his school and decides to select every 5th student from the list of all students. What type of sampling is he using?

• Simple random sampling.

• Systematic random sampling.

• Stratified sampling.

• Cluster sampling.

Anika is conducting a survey to understand the study habits of her classmates. She randomly selects students from her class to participate in the survey. Which of the following is a characteristic of probability sampling?

• Selection is based on convenience.

• Each member has an equal chance of being selected.

• It is less reliable than non-probability sampling.

• Selection is subjective.

Lily conducted a survey to understand the study habits of students at her school. However, she only included students who were members of the honor society. What is the issue with Lily's survey?

• Bias from a large sample size.

• Bias from a non-representative sample.

• Bias from systematic errors.

• Bias due to random errors.

In a school project, Arjun, Abigail, and Jackson are conducting a survey on student preferences for extracurricular activities. They decide to divide the student body into groups based on grade levels. What is the purpose of dividing the study population into groups?

• To reduce the cost of sampling.

• To simplify data collection.

• To ensure all groups are represented.

• To eliminate bias completely.

Isla is conducting a study on the eating habits of college students. What is the main goal of purposive sampling in her research?

• To randomly select individuals.

• To include as many individuals as possible.

• To minimize costs.

• To achieve a balanced sample.

Luna is conducting a survey to understand the shopping habits of her classmates. She decides to ask her friends who are nearby instead of randomly selecting students from the entire school. Which of the following is an example of non-probability sampling?

• Systematic random sampling.

• Simple random sampling.

• Stratified sampling.

• Convenience sampling.