« previous next »

Author Question: Test unit mortality refers to instances where researchers exceed the treatment and observation ... (Read 80 times)

ahriuashd

  • Hero Member
  • *****
  • Posts: 535
on: Jun 29, 2018
Test unit mortality refers to instances where researchers exceed the treatment and observation deadlines specified in the experimental design.
 
 Indicate whether the statement is true or false

Question 2

Compare and contrast random sampling error and systematic (nonsampling) error. How does the researcher minimize these errors?


polinasid

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 29, 2018
Answer to Question 1

F
Test unit mortality refers to test units withdrawing from the experiment while it is in progress.

Answer to Question 2

Random sampling error is the difference between the sample result and the result of an accurate census. It occurs because of chance variations in the selection of sampling units. The sampling units, even if properly selected according to sampling theory, may not perfectly represent the population because of chance variation. Random sampling error is a function of sample size, and as sample size increases, random sampling error decreases. Thus, researchers can reduce it my using larger samples. Systematic (nonsampling) errors result from nonsampling factors, primarily the nature of a study's design and the correctness of execution. These errors are systematic in some way and not due to chance fluctuations. Errors due to sample selection problems are nonsampling errors and should not be classified as random sampling errors. Researchers can reduce this type of error through competent sample design and implementation.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

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?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

A Motor Unit A Motor Unit
A functional renal unit. A functional renal unit.
Common Oral Lesions/Conditions Associated with HIV Infections and Treatment Guidelines Common Oral Lesions/Conditions Associated with HIV Infections and Treatment Guidelines
Drugs Used in the Treatment of Hyperlipidemia Drugs Used in the Treatment of Hyperlipidemia
Agents Used in the Treatment of Diabetes Mellitus Agents Used in the Treatment of Diabetes Mellitus
Prefilled Unit-Dose Systems Prefilled Unit-Dose Systems
Video: Eczema

For a complete list of videos, visit our video library