« previous next »

Author Question: Which of the following yields a cluster sample? A) The best 15 students, according to the opinion ... (Read 79 times)

Shelles

  • Hero Member
  • *****
  • Posts: 582
on: Jun 24, 2018
Which of the following yields a cluster sample?
 
  A) The best 15 students, according to the opinion of the instructor, in a class are selected.
  B) All students in a class are grouped according to their gender. A random sample of 8 is selected from the males and a separate random sample of 7 is selected from the females.
  C) All students in a class are divided into groups according to the rows that they are seated. One of the groups is randomly selected.
  D) All students in a class are divided into groups of 15. One student is randomly chosen from the 1st group, the remaining observations are every 15th student thereafter.

Question 2

Which of the following yields a stratified sample?
 
  A) All students in a class are grouped according to their gender. A random sample of 8 is selected from the males and a separate random sample of 7 is drawn from the females.
  B) The first 15 students in a class are selected without replacement.
  C) All students in a class are divided into groups of 15. One student is randomly chosen from the 1st group, the remaining observations are every 15th student thereafter.
  D) The best 15 students, according to the opinion of the instructor, in a class are selected.


samiel-sayed

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

A typical spectrum with peaks representing the peptide fragments generated from a sample A typical spectrum with peaks representing the peptide fragments generated from a sample
The WISC-IV: Sample Items The WISC-IV: Sample Items
Sample Problem from Raven’s Progressive Matrices Sample Problem from Raven’s Progressive Matrices
Sample Exercise Program for Limited Older Adults (cont.) Sample Exercise Program for Limited Older Adults (cont.)
Sample Advance Directive Sample Advance Directive
Sample hypnograms of an infant at ages 3, 12, and 24 months Sample hypnograms of an infant at ages 3, 12, and 24 months
Video: Hydrogen bonds vs. Ionic bond

For a complete list of videos, visit our video library