Author Question: In an experiment, the purpose for manipulating the independent variable is to help ____. a. ... (Read 64 times)

mia

  • Hero Member
  • *****
  • Posts: 564
In an experiment, the purpose for manipulating the independent variable is to help ____.
 
  a. establish the direction of the relationship by showing that the dependent variable changes when you manipulate the independent variable
  b. eliminate the third variable problem because you decide when to manipulate rather than waiting for the variable to change
  c. establish the direction of the relationship and help eliminate the third variable problem
 d. ensure that any effects of selection bias or other randomization failures are minimized

Question 2

Any sampling method in which sampling continues until a specific number of sampled units for each subgroup of a population have been included is called a(n) ____ sample.
 
  a. quota
 b. snowball
 c. heterogeneity
  d. expert



joanwhite

  • Sr. Member
  • ****
  • Posts: 308
Answer to Question 1

c

Answer to Question 2

a



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

For a complete list of videos, visit our video library