Lesson 4.2/4.3 Experiments and Using Studies GOOD

Front

Who decides if an experiment is ethical or not?

Back

An institutional review board.

Front

What are the variables you keep the same in the experiment called?

Back

Controlled variables.

Front

What is the difference between an observational study and an experiment?

Back

Experiments involve active data production.

Front

Determine if the following is an observation or experiment: How tall will a plant grow in different amounts of light?

Back

Experiment.

Front

If John were to take another random sample of 6 boxes of cereal from the same supermarket, would he likely get the exact same sample mean?

Back

No, because he may select different boxes of cereal. There will be high sampling variability since the sample size is only 6.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.

Front

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

Back

The control group serves as a baseline to compare the effects of the independent variable.

Front

Define independent variable.

Back

The independent variable is the factor that is manipulated or changed in an experiment.

Front

Define dependent variable.

Back

The dependent variable is the factor that is measured or observed in response to changes in the independent variable.

Front

What is sampling variability?

Back

Sampling variability refers to the natural variation in sample statistics from different samples taken from the same population.