Podcast
Questions and Answers
What is the key difference between dependent variables and controlled variables in an experiment?
What is the key difference between dependent variables and controlled variables in an experiment?
- Dependent variables are held constant, while controlled variables are measured.
- Dependent variables are measured first, while controlled variables are measured last.
- Dependent variables are manipulated, while controlled variables are measured.
- Dependent variables are measured based on manipulations, while controlled variables are kept constant. (correct)
In a scientific experiment, why is it important to have a representative sample?
In a scientific experiment, why is it important to have a representative sample?
- To ensure that the sample is large enough to capture variation in the population.
- To make conclusions about the larger population from the sample. (correct)
- To guarantee that the sample is randomly selected.
- To prevent using individuals more than once in the experiment.
When interpreting experimental results, what should scientists consider in addition to comparing with hypotheses and predictions?
When interpreting experimental results, what should scientists consider in addition to comparing with hypotheses and predictions?
- Correlation between different variables
- The number of individuals in the sample
- Accepting all hypotheses as correct
- Alternative explanations for the results (correct)
What should scientific questions focus on?
What should scientific questions focus on?
Why must a hypothesis be falsifiable?
Why must a hypothesis be falsifiable?
What is the purpose of generating predictions from hypotheses?
What is the purpose of generating predictions from hypotheses?
What is the role of the independent variable in an experiment?
What is the role of the independent variable in an experiment?
In the given text, why was it important for scientists to exclude the alternate explanation that diet preference explains observations?
In the given text, why was it important for scientists to exclude the alternate explanation that diet preference explains observations?
How does the Harvard Step Test measure a person's cardiovascular fitness?
How does the Harvard Step Test measure a person's cardiovascular fitness?
Why is it important to have at least one person designated to measure pulse rates/timer in the Harvard Step Test experiment?
Why is it important to have at least one person designated to measure pulse rates/timer in the Harvard Step Test experiment?
