Front

What is the difference between an observation and an experiment?

Back

An observation is a method of gathering data without manipulating variables, while an experiment involves manipulating one or more variables to observe the effect on another variable.

Front

What is subject confidentiality in research?

Back

Subject confidentiality refers to the ethical principle of protecting the identity and personal information of participants in a study.

Front

What does increasing sample size do to sampling variability?

Back

Increasing sample size reduces sampling variability, leading to more reliable and stable estimates of population parameters.

Front

What is sampling variability?

Back

Sampling variability is the natural variation in sample statistics (like the mean) that occurs when different samples are taken from the same population.

Front

Why is random selection important in studies?

Back

Random selection ensures that every individual in the population has an equal chance of being chosen, which helps to eliminate bias and allows for generalization of results.

Front

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

Back

A control group serves as a baseline to compare the effects of the experimental treatment, helping to isolate the impact of the independent variable.

Front

What is an independent variable?

Back

An independent variable is the variable that is manipulated or changed in an experiment to observe its effect on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is the variable that is measured or observed in an experiment, which is affected by changes in the independent variable.

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What is the significance of random sampling in making inferences about a population?

Back

Random sampling allows researchers to make valid inferences about a population based on the sample, as it minimizes bias and ensures representativeness.

Tags

CCSS.HSS.IC.B.3

Front

What is the role of hypothesis in an experiment?

Back

A hypothesis is a testable prediction about the relationship between variables, guiding the design and focus of the experiment.