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

Author Question: Which of the following describes an experiment? a. Create differences in the explanatory variable ... (Read 100 times)

pragya sharda

  • Hero Member
  • *****
  • Posts: 566
on: Jul 24, 2018
Which of the following describes an experiment?
 a. Create differences in the explanatory variable and then examine the results.
  b. Observe differences in the explanatory variable and then notice whether these are related to differences in the response variable.
  c. Both a) and b) are experiments.
  d. Neither a) nor b) are experiments

Question 2

Give two reasons why we must sometimes use an observational study instead of an experiment.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

morganmarie791

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

1) IT IS UNETHICAL OR IMPOSSIBLE IN CERTAIN SITUATIONS TO ASSIGN PEOPLE TO RECEIVE A SPECIFIC TREATMENT (SUCH AS SMOKING); 2) CERTAIN EXPLANATORY VARIABLES, SUCH AS LEFT VS. RIGHT HANDEDNESS, ARE INHERENT TRAITS AND CANNOT BE RANDOMLY ASSIGNED.

MULTIPLE CHOICE QUESTIONS


pragya sharda

  • Member
  • Posts: 566
Reply 2 on: Jul 24, 2018
Excellent

shewald78

  • Member
  • Posts: 340
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

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?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

The Hershey-Chase Experiment The Hershey-Chase Experiment
If you want to show differences between items at the same time, a bar graph is more effective than a If you want to show differences between items at the same time, a bar graph is more effective than a
Temperament refers to stable differences in the emotional reactions of different children to similar ... Temperament refers to stable differences in the emotional reactions of different children to similar ...
Counterbalancing in the Predator Experiment Counterbalancing in the Predator Experiment
Flow cytometry data that shows the differences in CD3+ CD4+ cells that occur with HIV infection. ... Flow cytometry data that shows the differences in CD3+ CD4+ cells that occur with HIV infection. ...
Allelic differences in alcohol metabolism Allelic differences in alcohol metabolism
Video: Mechanism of enzyme action

For a complete list of videos, visit our video library