Author Question: Describe what happens to the mean, the standard deviation, and the shape of a distribution when all ... (Read 157 times)

jman1234

  • Hero Member
  • *****
  • Posts: 560
Describe what happens to the mean, the standard deviation, and the shape of a distribution when all of the scores are transformed into z-scores.
 
  What will be an ideal response?

Question 2

For a distribution of scores, X = 40 corresponds to a z-score of z = 1.00, and X = 42 corresponds to a z-score of z = 0.50 . What are the values for the mean and standard deviation for the distribution? (Hint: sketch a distribution and locate each of the z-score positions.)
 
  What will be an ideal response?



jlaineee

  • Sr. Member
  • ****
  • Posts: 380
Answer to Question 1

When an entire distribution is transformed into z-scores, the resulting distribution will have a mean of zero, a standard deviation of one, and the same shape as the original distribution.

Answer to Question 2

 = 44 and  = 4



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

For a complete list of videos, visit our video library