This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Identify the two basic concerns with using a correlation to measure split-half reliability and ... (Read 65 times)

tichca

  • Hero Member
  • *****
  • Posts: 554
on: Jun 19, 2018
Identify the two basic concerns with using a correlation to measure split-half reliability and explain how these concerns are addressed by Spearman-Brown, K-R 20, and Cronbach's alpha.
 
  What will be an ideal response?

Question 2

An advantage of the median over the mean is that the median is
 
  a. easier to calculate.
  b. more sensitive to each of the sample scores.
  c. a measure of dispersion.
  d. less influenced by extreme scores..


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cloud

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jun 19, 2018
Answer to Question 1

The two basic concerns with using a correlation to measure split-half reliability are (1) the correlation is based on scores from only half of the test items and therefore tends to underestimate the true reliability of the full test; and (2) many different correlations are possible depending on how you decide to split the test items in half. Spearman-Brown addresses the first problem by adjusting the correlation upward to correct for the underestimation. K-R 20 and Cronbach's alpha both compute a measure that estimates the average correlation that would be obtained from all of the possible ways to split the test items in half.

Answer to Question 2

D


tichca

  • Hero Member
  • *****
  • Posts: 554
Reply #2 on: Jun 19, 2018
Thank you


cloud

  • Sr. Member
  • ****
  • Posts: 343
Reply #3 on: Jun 19, 2018
No problem :)


« previous next »
 

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Identify the structures shown below by filling in the blanks. Identify the structures shown below by filling in the blanks.
Posterior half of the brain. Posterior half of the brain.
A food diary can help patients identify unhealthy eating habits and make healthy choices. A food diary can help patients identify unhealthy eating habits and make healthy choices.
Basic chemical structure and synthesis of catecholamines. The synthesis of norepinephrine occurs in ... Basic chemical structure and synthesis of catecholamines. The synthesis of norepinephrine occurs in ...
Correlation Correlation
A buffer solution is prepared using 0.5 moles of a weakly basic drug and an unknown quantity of ... A buffer solution is prepared using 0.5 moles of a weakly basic drug and an unknown quantity of ...
Video: Parathyroid hormone (bone resorption) & Calcitonin (bone deposition)

For a complete list of videos, visit our video library