Scientific Method & Variables 2017

The dependent variable in this experiment is —

Independent variable? Caffeine speeds you heart rate

Independent variable? Exercise lowers blood pressure

This type of graph show how a population is broken down. All parts equal 100

A proposed scientific explanation of why something happens is called a

Dependent Variable? The fewer carbs you eat the more weight you lose.

This type of graph shows how a dependent variable changes over a period of time.

The variable which is being measured

The variable that is being controlled by the scientist

When doing an experiment, how many variables can be tested?

In an experiment, the factor being tested or changed on purpose is called the —

The group who does not receive the independent variable.

Seeds were studied in the experiment. What is the manipulated variable in this experiment?

Dependent Variable? Having the TV on will make you fall asleep slower

This type of graph is used to represent data obtained by counting

These are things that MUST stay the same throughout an experiment