Warm-Up 03/24/2025

What is the primary purpose of descriptive research in scientific studies?

• To establish cause-and-effect relationships

• To describe characteristics of a population or phenomenon

• To test a hypothesis

• To manipulate variables

Which of the following is a qualitative data collection technique?

• Surveys

• Interviews

• Experiments

• Observations

In an experiment, what is the term for the variable that is changed or controlled to test its effects on the dependent variable?

• Independent variable

• Dependent variable

• Control variable

• Extraneous variable

Tags

NGSS.MS-PS2-2

Which of the following is a method used to ensure the reliability of data collected in an experiment?

• Random sampling

• Repeating the experiment

• Using a control group

• Double-blind procedure

What is the main difference between quantitative and qualitative research?

• Quantitative research uses numbers, while qualitative research uses words

• Quantitative research is subjective, while qualitative research is objective

• Quantitative research is less reliable than qualitative research

• Quantitative research is more time-consuming than qualitative research

Which of the following best describes a hypothesis in scientific research?

• A proven fact

• An educated guess

• A random assumption

• A detailed observation

When analyzing experimental results, what is the purpose of using statistical tests?

• To collect data

• To interpret data

• To ensure data accuracy

• To determine the significance of the results

Tags

NGSS.HS-LS3-3

Which of the following is an example of a simple procedure in data collection?

• Designing a complex survey

• Conducting a literature review

• Measuring temperature with a thermometer

• Analyzing data using software

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

• To introduce new variables

• To serve as a standard for comparison

• To ensure the experiment is biased

• To manipulate the independent variable

Which data collection technique involves observing subjects in their natural environment without interference?

• Controlled experiment

• Naturalistic observation

• Case study

• Survey