Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

chapter one

variable something that can change in a test
hypothesis statement of what you think will happen during an investigation
control group a standard against which change is measured
observation something you find out about objects, events, or living things using your senses
procedures step-by-step instructions for completing a task
experiment the use of scientific methods to test hypothesis
inference a conclusion based on observations
data information from which a conclusion can be drawn or a prediction can be made
evidence observations that make you believe someting is true
precision the ability to consistantly repeat a measurement
accuracy ability to make a meke a measurement that is as close to the actual value as possible
models objects or ideas that represent certain things
survey Questions that are answered by people. Great for opinion questions.
sampling examine random individuals from a random population
independent variable the variable u can control or change
dependent vairable its is whats measured. changes when the independent varible changes.
experimental group the group that doesnt get
control group the group that gets the special treatment