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 37 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 recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

The nurse uses a noninvasive bladder ultrasound to measure the client’s bladder volume. The nurse uses a noninvasive bladder ultrasound to measure the client’s bladder volume.
Performing a Spirometry Test to Measure Forced Vital Capacity Performing a Spirometry Test to Measure Forced Vital Capacity
The second half of life brings a change from outward to inward concerns and from physical to ... The second half of life brings a change from outward to inward concerns and from physical to ...
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 ...
This mini clamp-on DMM is being used to measure the amount of battery electrical drain that is ... This mini clamp-on DMM is being used to measure the amount of battery electrical drain that is ...
Half-life explained Half-life explained
Video: Stroke volume - afterload definition & hypertension

For a complete list of videos, visit our video library