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

Author Question: A researcher is constructing a test for use in a study. In order to insure the highest reliability, ... (Read 34 times)

kshipps

  • Hero Member
  • *****
  • Posts: 571
on: Jun 20, 2018
A researcher is constructing a test for use in a study. In order to insure the highest reliability, the researcher should
 
  a. increase the number of items on the test.
  b. plan to increase item homogeneity.
  c. try out the test on a heterogeneous group.
  d. All of these are true.

Question 2

A researcher has constructed an attitude scale in which each item is scored from 1 to 5 depending on the extent of agreement or disagreement. The estimate of score reliability that would be recommended for this scale is
 
  a. Kuder-Richardson formula 20.
  b. Kuder-Richardson formula 21.
  c. Cronbach's coefficient alpha.
  d. biserial correlation coefficient.
  e. phi coefficient.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

swimkari

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

C


kshipps

  • Member
  • Posts: 571
Reply 2 on: Jun 20, 2018
:D TYSM

xthemafja

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

If sociologists were to study land diving on Pentecost Island in Vanuatu, they could use a variety ... If sociologists were to study land diving on Pentecost Island in Vanuatu, they could use a variety ...
A medical assistant performs a spirometry test using electronic health record software. A medical assistant performs a spirometry test using electronic health record software.
Two behavioral paradigms that are used extensively in the study of the neural mechanisms of ... Two behavioral paradigms that are used extensively in the study of the neural mechanisms of ...
The Olestra study followed a sequence of steps The Olestra study followed a sequence of steps
Outgroup role in relative rate test Outgroup role in relative rate test
Type III curve. Mortality is highest early in life. Data for a desert shrub (Cleome droserifolia). Type III curve. Mortality is highest early in life. Data for a desert shrub (Cleome droserifolia).
Video: Ventilation - phases and driving forces

For a complete list of videos, visit our video library