Inquizitive and Smart work Homework Ch. 2 Questions and Answers 100% Pass

Inquizitive and Smart work Homework Ch. 2 Questions and Answers 100% Pass What does the term "hypothesis" refer to in scientific research? A testable prediction or explanation based on prior knowledge or observation What is the main difference between qualitative and quantitative data? Qualitative data describes characteristics, while quantitative data involves numerical measurements What is the purpose of a control group in an experiment? To provide a baseline for comparison, ensuring that the results are due to the independent variable What is the scientific method? A systematic process used to investigate observations, solve problems, and test hypotheses What does it mean to operationalize a variable? 2 To define it in measurable terms so that it can be tested and analyzed in an experiment What is the purpose of a peer review in scientific research? To ensure that research findings are valid, reliable, and free from bias by having other experts in the field evaluate the work What is the difference between correlation and causation? Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other What is a dependent variable in an experiment? The variable that is measured or observed in response to changes in the independent variable What is the purpose of random sampling in research? To ensure that the sample is representative of the population and reduce bias What is the significance of a sample size in research studies? A larger sample size generally leads to more reliable and generalizable results 3 What does "statistical significance" mean in research? It means the results of an experiment are unlikely to have occurred by chance and are likely to be meaningful What is the role of an independent variable in an experiment? It is the variable that is deliberately manipulated or changed to observe its effect on the dependent variable What is a theory in scientific research? A well-substantiated explanation of an aspect of the natural world that has been repeatedly tested and confirmed What is the importance of replication in scientific research? Replication ensures that results are reliable and not due to random chance or experimental error What is the role of a hypothesis in a research study? It provides a tentative explanation or prediction that can be tested through experimentation 4 What is the difference between descriptive and inferential statistics? Descriptive statistics summarize data, while inferential statistics use sample data to make predictions or inferences about a population What does "validity" mean in the context of research? It refers to the extent to which an experiment measures what it is intended to measure What does "reliability" refer to in research? It refers to the consistency and stability of the results over repeated measurements or tests What is an experiment's "confounding variable"? A factor other than the independent variable that could