Scientific Method and Hypothesis Testing

The video explains the scientific method as a systematic approach to eliminate bias and solve problems. It outlines the five key steps: making observations, asking questions, formulating a hypothesis, conducting experiments, and drawing conclusions. The importance of creating testable and falsifiable hypotheses is emphasized, along with setting up controlled experiments. Data collection involves both qualitative and quantitative methods, and analysis is crucial for supporting or rejecting hypotheses. The video also discusses scientific laws, models, and theories, highlighting the continuous nature of testing in science.

What is the primary purpose of the scientific method?

• To make scientific research faster

• To ensure all scientists reach the same conclusions

• To provide a logical framework for solving problems

• To eliminate all errors in experiments

Which of the following is NOT a step in the scientific method?

• Reaching a conclusion

• Making observations

• Formulating a hypothesis

• Conducting a survey

What is a hypothesis often referred to as?

• A proven fact

• A random guess

• An educated guess

• A scientific law

What makes a hypothesis testable?

• It can be proven true

• It can be proven false

• It is based on a theory

• It is universally accepted

In a controlled experiment, what is the role of the control group?

• To ensure the experiment is valid

• To provide a baseline for comparison

• To manipulate the independent variable

• To receive the variable being tested

What is the independent variable in an experiment?

• The variable that remains constant

• The variable that is dependent

• The variable that is manipulated

• The variable that is measured

What type of data is described using words?

• Numerical data

• Statistical data

• Qualitative data

• Quantitative data

What should a conclusion in a scientific experiment include?

• A list of all variables

• A summary of the hypothesis

• An error analysis

• A detailed procedure

What is a scientific law?

• A mathematical model

• A proven theory

• A generalization describing natural behavior

• A well-tested hypothesis

How are scientific theories different from laws?

• Theories are proven facts

• Theories are universally accepted

• Theories explain why phenomena occur

• Theories are not testable