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 78 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?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Traditional Chinese Medicines Reveals Legality Issues and Health Safety Concerns Traditional Chinese Medicines Reveals Legality Issues and Health Safety Concerns
Summation of Heart Sounds, Wide Split of S1 Summation of Heart Sounds, Wide Split of S1
The tools necessary to adjust the valves on an engine with adjustable rocker arms include basic hand ... The tools necessary to adjust the valves on an engine with adjustable rocker arms include basic hand ...
The basic structure of the IL-2 receptor. The basic structure of the IL-2 receptor.
(A) A brisk half-moon stroke is an efficient technique to use with the body brush or exfoliation ... (A) A brisk half-moon stroke is an efficient technique to use with the body brush or exfoliation ...
Ways to Measure Percentage of Body Fat Ways to Measure Percentage of Body Fat
Video: Interview with Person having Obsessive Compulsive Disorder

For a complete list of videos, visit our video library