12A,B Statistics Quiz

What is a population in statistical analysis?

• The entire group of individuals or items being studied

• A subset of the sample

• A summary of the data collected

• A statistical model for predicting outcomes

Which term refers to a subset of the population used to draw conclusions?

• Sample

• Population

• Strata

• Variable

Why is it often necessary to use a sample instead of the entire population?

• It is cost-effective and feasible

• It is more time-consuming

• It reduces accuracy

• It increases the complexity of the analysis

What is the primary goal of sampling?

• To make inferences about a population

• To identify errors in data

• To select the most interesting data

• To describe the characteristics of a dataset

Which sampling method ensures that every individual has an equal chance of selection?

• Simple random sampling

• Stratified sampling

• Cluster sampling

• Convenience sampling

Which sampling technique divides the population into subgroups and selects samples from each?

• Stratified sampling

• Systematic sampling

• Cluster sampling

• Convenience sampling

What type of sampling selects individuals who are easiest to reach?

• Convenience sampling

• Stratified sampling

• Cluster sampling

• Systematic sampling

In systematic sampling, how are participants selected?

• Every nth individual is selected

• Based on the researcher’s convenience

• Randomly selected from subgroups

• Selected from an entire cluster

When is cluster sampling most appropriate?

• When the population is divided into naturally occurring groups

• When you want to compare subgroups

• When the population is homogeneous

• When you need a quick and easy sample

What is one disadvantage of convenience sampling?

• It introduces bias

• It guarantees equal representation

• It is highly accurate

• It is time-consuming