Experimental Design

# Experimental Design - white(control group Track prey...

This preview shows pages 1–8. Sign up to view the full content.

Experimental Design Obtain 500 dogs of various breeds from local shelters. Have vet weed out the 200 dogs with the most fleas. Randomly assign individuals to 2 groups. Board the dogs in identical environments and treat them the same except that one group gets to wear the King collar and the other group does not After 2 wks. The dogs are examined by a vet for fleas.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Results: the dogs wearing the King collars were virtually free of fleas after the 2 wk period compared to the dogs without the collars which had about the same number of fleas as when the experiment began
Second Example Observation: polar bears are white, you wonder why this is so Hypotheses:

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Prediction: polar bears which are white will capture more prey than those which are dark Experimental Design: spray paint 5 polar bears dark(experimental Group)/leave 5

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: white(control group) Track prey capture for 8 weeks Effect of Polar Bear coat color on prey capture Color of Bear White Dark Number of Prey Probability and Statistics • Probability : an attempt to measure and predict the likelihood of an event • Statistics : allow you to evaluate comparisons between experimental and control groups Effect of Polar Bear coat color on prey capture Color of Bear White Dark Mean Number of Prey captured Mean: sum the values, divide by the number of values Statistics • Sample Size : # of observations necessary to have a reliable representation of a population • Confidence Limits : estimates that reflect the reliability of your mean (average) – Probability your sample is similar to other random samples of that population...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern