« previous next »

Author Question: Differentiate between the Wilcoxon signed rank test and the Wilcoxon rank sum test, and explain the ... (Read 330 times)

strangeaffliction

  • Hero Member
  • *****
  • Posts: 660
on: Jun 24, 2018
Differentiate between the Wilcoxon signed rank test and the Wilcoxon rank sum test, and explain the circumstances under which each should be applied.

Question 2

What is the parametric counterpart to the Wilcoxon signed rank test for paired samples? Compare the assumptions involved in using the respective tests.


flannelavenger

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jun 24, 2018
Answer to Question 1

The Wilcoxon rank sum test compares two independent samples, while the Wilcoxon signed rank test can be used to compare two dependent samples. The Wilcoxon rank sum test should be used with independent samples, and the signed rank test should be used when dealing with pairs.

Answer to Question 2

The parametric counterpart to the Wilcoxon signed rank test for paired samples is the paired samples t-test. Both tests assume continuous data on the interval or ratio scale, and the data come in pairs. The t-test assumes that both underlying populations are normally distributed, whereas the Wilcoxon test assumes only that both distributions are fairly symmetric in shape.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Stimuli Used in a Test of Word Recognition Stimuli Used in a Test of Word Recognition
Inverse Relation Between IQ and Disease. Could this explain the Flynn effect? Inverse Relation Between IQ and Disease. Could this explain the Flynn effect?
Common Blood Test Groups Common Blood Test Groups
Diesel Emission Testing - Opacity Test. Diesel Emission Testing - Opacity Test.
Using a digital multimeter to test an oxygen sensor using the MIN/MAX record function of the meter. Using a digital multimeter to test an oxygen sensor using the MIN/MAX record function of the meter.
The Turing Test The Turing Test
Video: Negative Feedback Regulation of Blood Pressure

For a complete list of videos, visit our video library