Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Correlation

QuestionAnswer
Avoid what two 5 letter words? Truth and Prove
Instead say... Evidence and Support
What is a powerful way to detect causation? Manipulated experiments
Elements of experiments Use replicates / Use controls / Change one variable at a time
Three studies with different methods Correlation / Development of models / Experimentation
What is an example of correlation study? Peter and Rosemary Grant studying the survival and reproduction of Darwin's finches
What was the main focus of Peter and Rosemary Grant's study? Beak because it is their source in opening their seeds
What did the Grants and their students do in caluculating facts? ---
1st Banded birds so they could be recognized individually
2nd Measured many features of each bird
3rd Measured kinds and sizes of seeds available over time
4th Kept track of the number of birds alive
What caused a breeding season to pass w/o reproduction? A severe drought
What dropped during the severe droughts? Number of birds and abundance of seeds
What is involved in the finch study? Correlation and causation
What were the remaining seeds available? The seeds larger and harder
What happened to beak size as the seeds got larger and harder? The small beaks die out and the beak size evolved
What do beaks determine? Life or death because it is a survival tool and the amount of food needed
Conclusion Lack of rain > lack of seeds > lack of bird population
An experimental study: Anders Moller- Why do male barn swallows have longer tails than females? Males swallows had more offspring than males with short tails
How did they manipulate tail size in determining the true factor? Shortened tail / Lengthened tail / Normal tail / Cut and re-glue tail
Created by: animalsavior
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards