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

Author Question: A researcher selects a sample from a population with = 30 and uses the sample to evaluate the effect ... (Read 63 times)

nmorano1

  • Hero Member
  • *****
  • Posts: 598
on: Jun 20, 2018
A researcher selects a sample from a population with = 30 and uses the sample to evaluate the effect of a treatment. After treatment, the sample has a mean of M = 32 and a variance of s2 = 6 . If Cohen's d is used to measure the size of the treatment effect, which of the following would have no effect on the value of Cohen's d?
 
  a. Increase the sample size
  b. Increase the sample mean
  c. Increase the sample variance
  d. All of the other options will influence the value of Cohen's d.

Question 2

How does sample variance influence the estimated standard error and measures of effect size such as r2 and Cohen's d?
 
  a. Larger variance increases both the standard error and measures of effect size.
  b. Larger variance increases the standard error but decreases measures of effect size.
  c. Larger variance decreases the standard error but increases measures of effect size.
  d. Larger variance decreases both the standard error and measures of effect size.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

recede

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

A

Answer to Question 2

B


nmorano1

  • Member
  • Posts: 598
Reply 2 on: Jun 20, 2018
Wow, this really help

ultraflyy23

  • Member
  • Posts: 312
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

A person with a defective "P" gene might only have it effect the EYES A person with a defective "P" gene might only have it effect the EYES
Sample of an informed consent to perform an operation, sedation, anesthesia, and other medical servi Sample of an informed consent to perform an operation, sedation, anesthesia, and other medical servi
Sample Exercise Program for Limited Older Adults (cont.) Sample Exercise Program for Limited Older Adults (cont.)
Evaluate the first derivation of the following functions. Encircle your final answer. Evaluate the first derivation of the following functions. Encircle your final answer.
Evaluate the first derivation of the following functions. Evaluate the first derivation of the following functions.
Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ... Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ...
Video: Graded potentials - electrical characteristics and types

For a complete list of videos, visit our video library