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

Author Question: A researcher begins a study with 250 subjects, and 50 subjects drop out before the study is ... (Read 93 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
on: Jul 8, 2018
A researcher begins a study with 250 subjects, and 50 subjects drop out before the study is concluded. The researcher will declare 20 as the sample
 
  a. acceptance rate.
  b. attrition rate.
  c. refusal rate.
  d. retention rate.

Question 2

A pilot study reveals a wide variation in measurement values among subjects with an overall mean value that is higher than among the general population. By increasing the sample size in a subsequent study, the researcher expects to
 
  a. decrease the variation of scores among subjects.
  b. increase the variation of scores among subjects.
  c. decrease the mean value of scores among subjects.
  d. increase the mean value of scores among subjects.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jackie

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 8, 2018
Answer to Question 1

ANS: B

Answer to Question 2

ANS: A


Hungry!

  • Member
  • Posts: 1,071
Reply 2 on: Jul 8, 2018
Gracias!

ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

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

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Results of the study by Laruelle et al. (1996) Results of the study by Laruelle et al. (1996)
Results from sequential study of two cohorts tested at three ages and at three different points in t Results from sequential study of two cohorts tested at three ages and at three different points in t
Mary Cassatt, Study for In the Loge. Mary Cassatt, Study for In the Loge.
Case Study of a Midlatitude Cyclone Case Study of a Midlatitude Cyclone
A GWAS study for Type 2 diabetes revealed 386,371 genetic markers, clustered here by chromosome numb A GWAS study for Type 2 diabetes revealed 386,371 genetic markers, clustered here by chromosome numb
A field study of guppy life history evolution. A field study of guppy life history evolution.
Video: Brain Anatomy Animation (Part 1 of 2)

For a complete list of videos, visit our video library