Author Question: The conventional method of controlling the influence of contaminating variables in a laboratory ... (Read 72 times)

Metfan725

  • Hero Member
  • *****
  • Posts: 552
The conventional method of controlling the influence of contaminating variables in a laboratory experiment is to
 
  a. have a larger experimental group.
  b. select a control group as well as an experimental group.
  c. use more independent variables than dependent variables.
  d. have no control group.
  e. select only those variables about which one can be positive of their impact.

Question 2

In an experiment, the experimental variable is applied to the ____.
 
  a. population
  b. experimental group
  c. control group
  d. larger group
  e. random sample



momo1250

  • Sr. Member
  • ****
  • Posts: 338
Answer to Question 1

B

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

For a complete list of videos, visit our video library