« previous next »

Author Question: Cohen's d expresses the magnitude of the difference between groups in _____ units. a. standard ... (Read 33 times)

Sufayan.ah

  • Hero Member
  • *****
  • Posts: 512
on: Jun 19, 2018
Cohen's d expresses the magnitude of the difference between groups in _____ units.
 
  a. standard deviation c. standard score
  b. raw score d. standard error

Question 2

Why is it important to know the size of the effect in an experiment? It is important because _____.
 
  a. it is possible to achieve statistical significance with very small differences when n is big
  b. statistically significant differences do not necessarily have practical significance
  c. both a and b
  d. none of these


pikon

  • Sr. Member
  • ****
  • Posts: 361
Reply #1 on: Jun 19, 2018
Answer to Question 1

A
d is a measure of the number of standard deviation units that separate the group means.

Answer to Question 2

C
The larger the n, the smaller the difference between means that is required in order to be statistically significant.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Sufayan.ah

  • Hero Member
  • *****
  • Posts: 512
Reply #2 on: Jun 19, 2018
Thank you


pikon

  • Sr. Member
  • ****
  • Posts: 361
Reply #3 on: Jun 19, 2018
No problem :)


« previous next »
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

The standard protocol of a metagenomics experiment. The standard protocol of a metagenomics experiment.
Several common functional groups in a single biomolecule Several common functional groups in a single biomolecule
(a) Savanna baboons live in female-philopatric groups, among which males migrate. (b) Chimpanzees li (a) Savanna baboons live in female-philopatric groups, among which males migrate. (b) Chimpanzees li
Object and Word Recognition After Vertices Have Been Eliminated (Adapted from Szwed, M., Cohen, L, Q Object and Word Recognition After Vertices Have Been Eliminated (Adapted from Szwed, M., Cohen, L, Q
Difference Between Solar and Sidereal Day Difference Between Solar and Sidereal Day
An electron is accelerated from rest through a potential difference of 3750 V. It enters a ... An electron is accelerated from rest through a potential difference of 3750 V. It enters a ...
Video: A timeline of the teeth (Explained - No Audio)

For a complete list of videos, visit our video library