1.4 Observational & Experimental Studies

Front

What is an independent variable?

Back

An independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Tags

CCSS.HSS.IC.B.3

Front

What is an observational study?

Back

An observational study is a type of research where the researcher observes and records behavior or outcomes without manipulating any variables.

Tags

CCSS.RI.11-12.7

CCSS.RI.9-10.7

CCSS.RL.11-12.7

CCSS.RL.8.7

CCSS.RL.9-10.7

Front

What is an experimental study?

Back

An experimental study is a type of research where the researcher manipulates one or more independent variables to determine their effect on a dependent variable.

Front

What is the purpose of a control group in an experiment?

Back

A control group is used as a benchmark to measure how the other tested subjects do, ensuring that the results are due to the independent variable.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.

Tags

CCSS.RI.11-12.3

CCSS.RI.11-12.5

CCSS.RI.8.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

Front

What is the significance of random assignment in experiments?

Back

Random assignment helps ensure that each participant has an equal chance of being placed in any group, reducing bias and increasing the validity of the results.

Front

What is a confounding variable?

Back

A confounding variable is an outside influence that changes the effect of a dependent and independent variable, potentially leading to erroneous conclusions.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data is descriptive and conceptual, while quantitative data is numerical and can be measured.

Front

What is a sample in research?

Back

A sample is a subset of a population selected for observation and analysis in a study.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1