Suppose a researcher randomly samples 20 people who do not have ...

[sammy]

Suppose a researcher randomly samples 20 people who do not have celiac disease, but have chosen to stop eating gluten. The researcher obtains ratings (on a 1 to 5 scale) of overall well-being before each person stopped eating gluten, and obtains the same rating two months after each person stopped eating gluten. The researcher wants to test whether the ratings change before and after a two-month period of gluten-free eating. The data the researcher obtains can best be described as:
 A. Independent
  B. Paired
  C. Qualitative

Question 2

Why does the video say you should be tested before giving up gluten completely?
 A. Gluten is a necessary nutrient.
  B. If you don't have celiac disease, eating gluten-free will not help you.
  C. You might be allergic to gluten-free products.
  D. The symptoms you are trying to resolve by not eating gluten might be due to another cause.

[irishcancer18]

Answer to Question 1

B. Paired

FEEDBACK:
The data for the study described here can be described as paired, matched or dependent. The variable of interest, the rating of overall well-being, is measured twice in a before and after scenario. The two ratings for each person are paired to or matched with each other because they come from the same person. Likewise, because the two ratings come from the same person, they are not independent, meaning they are dependent.

Answer to Question 2

D.The symptoms you are trying to resolve by not eating gluten might be due to another cause.

FEEDBACK:
The video says you should be tested first to rule out other possible causes for your symptoms.

[sammy]

TY

[irishcancer18]

You're welcome