Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards
share
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

Experimental Design

Review of experimental design and vernacular

QuestionAnswer
Used when the experiment has exactly two treatment conditions, subjects are paired off based on similarities - or act as their own "pair." Within each pair, each treatment is randomly assigned. Remember! Randomization occurs ONLY within the pairs. matched pairs design
________ occurs when control is not present in the experimental design. This happens when the researcher does not account for a variable that may have influenced the responses. The data collected in this experiment can't be used to draw conclusions. confounding
_______________ bias occurs when subjects are unwilling or unable to participate in a survey. nonresponse
When a subject responds to a treatment that is really neutral as if they have received an actual treatment, we call that the ___________ _____________. placebo effect
When certain members of the population are not represented in the sample, we call that ___________________. undercoverage
Used when the researcher divides the sample into subgroups based on a particular criteria, then assigns treatments randomly within the subgroups. randomized block design
The researcher has NO CONTROL over any treatment or response but instead only records data. observational study
When every member of the population is just as likely to be chosen as another. Every possible sample size n is equally likely to be chosen. SRS (simple random sample)
In general ____ occurs when the results favor a certain outcome. bias
_____ is when we ensure in our experimental design that multiple experimental units will receive each treatment. replication
_________________ reduces bias and (hopefully) reduces the effect of lurking variables by spreading those variables out among the treatment groups. randomization
Created by: donnawiles3