Scientific Method and Variables

What is the importance of replicating experiments?

• To ensure that results are consistent and reliable.

• To make the experiments more complex and difficult.

• To reduce the time taken for research.

• To increase the number of variables in the experiment.

What is a scatter plot used for?

• To show the relationship between two quantitative variables.

• To display categorical data in bars.

• To illustrate the frequency distribution of a dataset.

• To represent data in a pie chart format.

What is quantitative data?

• Data that can be measured and expressed numerically.

• Data that describes qualities or characteristics.

• Data that is collected through surveys and interviews.

• Data that is only available in textual format.

What is the purpose of a hypothesis in an experiment?

• To provide a testable prediction about the relationship between variables.

• To summarize the results of the experiment.

• To outline the materials needed for the experiment.

• To describe the steps of the experimental procedure.

What is a variable in an experiment?

• A constant factor that does not change during the experiment.

• Any factor, trait, or condition that can exist in differing amounts or types.

• A specific measurement taken at the end of an experiment.

• A hypothesis that is tested during the experiment.

What type of graph is best for showing trends over time?

• Bar graph

• Pie chart

• Line graph

• Scatter plot

What is qualitative data?

• Data that describes qualities or characteristics, often non-numerical.

• Data that can be measured and expressed numerically.

• Data that is collected through experiments and observations.

• Data that is used for statistical analysis.

What is the Analysis section of an experiment?

• It contains the data tables and graphs, summarizing the results.

• It outlines the hypothesis and objectives of the experiment.

• It describes the materials and methods used in the experiment.

• It provides a detailed discussion of the theoretical background.

What is an Independent Variable?

• It is what the scientist changes in the experiment.

• It is what the scientist keeps constant throughout the experiment.

• It is the outcome that is measured in the experiment.

• It is a variable that does not affect the experiment.

What type of graph is best for comparing different groups?

• Line graph

• Pie chart

• Bar graph

• Scatter plot