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

Author Question: A teacher split a 50-item test into odd and even items, scored each half, and then correlated odd ... (Read 66 times)

panfilo

  • Hero Member
  • *****
  • Posts: 572
on: Jun 20, 2018
A teacher split a 50-item test into odd and even items, scored each half, and then correlated odd scores with even scores. The correlation coefficient was .55 . What is the estimated reliability for the full 50-item test?
 
  a. .80
  b. .71
  c. .69
  d. .65
  e. .60

Question 2

The reliability of a spelling test is .80 . If the test is doubled in length, the reliability of the test will be approximately
 
  a. .80.
  b. .84.
  c. .89.
  d. .90.
  e. 1.60.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Hdosisshsbshs

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jun 20, 2018
Answer to Question 1

B

Answer to Question 2

C


panfilo

  • Member
  • Posts: 572
Reply 2 on: Jun 20, 2018
Gracias!

vickyvicksss

  • Member
  • Posts: 351
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

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

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Lake 226 at the Experimental Lakes Area divided in half. Lake 226 at the Experimental Lakes Area divided in half.
Straight Leg Raising Test Straight Leg Raising Test
Blood glucose measurement. A postprandial test may be self-administered. (a) A lance pierces the ski Blood glucose measurement. A postprandial test may be self-administered. (a) A lance pierces the ski
Relative rate test, calibrating the molecular clock, and calculating divergence dates. Relative rate test, calibrating the molecular clock, and calculating divergence dates.
How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay? How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay?
The Ames test for potential mutagenicity of chemical compounds The Ames test for potential mutagenicity of chemical compounds
Video: Secondary Active Transport

For a complete list of videos, visit our video library