Biology EOC Review - Experimental Design

Front

What is an independent variable in an experiment?

Back

The independent variable is the one that is deliberately changed or manipulated by the scientist to observe its effect on the dependent variable.

Front

What is a dependent variable in an experiment?

Back

The dependent variable is the one that is measured or observed in an experiment to see how it is affected by changes in the independent variable.

Front

What is a control group in an experiment?

Back

A control group is a standard of comparison in an experiment that is not exposed to the independent variable, allowing for a baseline to measure the effects of the independent variable.

Front

What is the purpose of a hypothesis in scientific experiments?

Back

A hypothesis is a testable prediction about the relationship between the independent and dependent variables.

Front

What is the difference between qualitative and quantitative observations?

Back

Qualitative observations describe characteristics or qualities (e.g., color, texture), while quantitative observations involve measurements and numbers (e.g., height, weight).

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge, typically involving observation, hypothesis formulation, experimentation, and conclusion.

Front

What is the role of replication in experiments?

Back

Replication involves repeating an experiment to verify results and ensure reliability and accuracy of the findings.

Front

What is a variable in an experiment?

Back

A variable is any factor, trait, or condition that can exist in differing amounts or types and can affect the outcome of an experiment.

Front

What is a controlled variable?

Back

A controlled variable is a factor that is kept constant throughout an experiment to ensure that any changes in the dependent variable are due to the independent variable.

Front

What is the significance of using a large sample size in experiments?

Back

A large sample size increases the reliability of the results and helps to minimize the effects of random variation.