Elaine is studying the effect of sleep deprivation on motorists. The chart below shows the reaction times of the drivers she studied. What is the independent variable in Elaine’s study?

A scientist studying cold medicines hypothesizes that one particular medicine is more effective than the others in the study. He attempts the experiment several times. Each attempt produces a different result. What should he do next?

Two students prepare lab reports, one for a physics class and the other for a biology class. Which of the following items will both reports contain?

a visual representation of data used to show patterns and relationships

In a controlled experiment, how many independent variables can be worked with at a time?

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is

A students was doing an experiment using the scientific method. Every three days the student plans to count the green leaves. Which would be a good hypothesis for this experiment?

group that receives a different amount or type of the variable you are changing

Ms. Jenks sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

Name the steps for an experiment in order

A list of the steps anyone could follow to conduct an experiment.

What is a hypothesis?

There are two types of data. Which type of data involves descriptions/photographs/illustrations that cannot be counted or measured?