Sampling Techniques and Inference Quiz

What is the primary purpose of using sampling techniques in research?

• To gather data from the entire population
• To make inferences about a population based on a sample
• To avoid bias in data collection
• To increase the response rate

Which of the following best describes a systematic sample?

• Selecting every nth individual from a list
• Choosing individuals randomly from different strata
• Surveying every individual in a population
• Using a random number generator to select participants

What is a biased representation in sampling?

• A sample that accurately reflects the population
• A sample that is too small to be reliable
• A sample that favors certain outcomes over others
• A sample that includes all demographic groups

What is a sampling frame?

• A method for collecting data
• A list of individuals from which a sample is drawn
• A type of statistical analysis
• A way to visualize data

In which scenario would a quota sample be most appropriate?

• When the population is well-defined and accessible
• When researchers want to ensure representation of specific characteristics
• When random sampling is not feasible
• When the sampling frame is unknown

How do you calculate the response rate in a survey?

• Total responses divided by total participants
• Total responses divided by total surveys sent
• Total surveys sent divided by total responses
• Total participants divided by total surveys sent

What distinguishes a stratified sample from a simple random sample?

• Stratified samples include random selection from subgroups
• Stratified samples are always larger
• Stratified samples do not require a sampling frame
• Stratified samples are less accurate

What is the main challenge when a sampling frame is not known?

• It is impossible to conduct any sampling
• It may lead to biased samples
• It guarantees a random sample
• It simplifies the sampling process

What is the significance of a back-to-back stem-and-leaf diagram?

• It shows the distribution of two related data sets
• It simplifies complex data into a single number
• It is used only for qualitative data
• It is a method for random sampling

What is an inference in statistics?

• A guess based on personal opinion
• The process of collecting data
• The total number of individuals in a study
• A conclusion drawn from a sample to make generalizations about a population