Statistical Studies

Front

What is the definition of a population in statistics?

Back

A population is an entire set of items or individuals from which data are collected.

Front

What research method involves studying subjects in their natural environment without interference?

Back

Observational study.

Front

What are confounding variables?

Back

Confounding variables are variables that can potentially distort the relationship between the treatment and the results.

Front

What is sample bias?

Back

Sample bias is an error that occurs when a sample does not represent the population.

Front

Why is it important to include the target population in a sample?

Back

Including the target population ensures that the sample accurately reflects the characteristics and preferences of the entire group.

Front

What is the difference between a sample and a population?

Back

A sample is a subset of a population used to represent the whole, while a population includes all items or individuals of interest.

Front

What is the purpose of random sampling in research?

Back

Random sampling aims to eliminate bias and ensure that every individual has an equal chance of being selected.

Front

What is a variable in the context of statistical studies?

Back

A variable is any characteristic, number, or quantity that can be measured or counted.

Front

What is the significance of using control groups in experiments?

Back

Control groups help to isolate the effect of the treatment by providing a baseline for comparison.

Front

What is the role of hypothesis testing in statistical studies?

Back

Hypothesis testing is used to determine whether there is enough evidence to reject a null hypothesis.