« previous next »

Author Question: Mortality is a threat to the validity of a study that is caused by _____. a. the lack of random ... (Read 11 times)

Mimi

  • Hero Member
  • *****
  • Posts: 542
on: Jun 19, 2018
Mortality is a threat to the validity of a study that is caused by _____.
 
  a. the lack of random assignment
  b. having only one group of subjects
  c. comparing subjects who are at different stages of development
  d. some subjects failing to complete the study

Question 2

In inferential statistics random sampling is regarded as desirable but not essential.
 
  Indicate whether the statement is true or false


yotaSR5

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jun 19, 2018
Answer to Question 1

D
Mortality refers to the drop-out rate.

Answer to Question 2

F


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study
Variegated leaves caused by a mutation in cpDNA Variegated leaves caused by a mutation in cpDNA
This is what was found when removing an air filter from a vehicle that had a lack-of-power concern. ... This is what was found when removing an air filter from a vehicle that had a lack-of-power concern. ...
The Olestra study followed a sequence of steps The Olestra study followed a sequence of steps
Carons' study Carons' study
The study of how traits such as flower color are passed from generation to generation provided the m The study of how traits such as flower color are passed from generation to generation provided the m
Video: Introduction to Epilepsy

For a complete list of videos, visit our video library