« previous next »

Author Question: Test unit mortality refers to instances where researchers exceed the treatment and observation ... (Read 58 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?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

The Allen Test: Pallor is initiated by compressing the radial and ulnar arteries with the fist clenc The Allen Test: Pallor is initiated by compressing the radial and ulnar arteries with the fist clenc
Valgus Stress Test Valgus Stress Test
A medical assistant performs a spirometry test using electronic health record software. A medical assistant performs a spirometry test using electronic health record software.
Schematic of Rectification Unit Schematic of Rectification Unit
Antiretroviral Drugs Used for the Treatment of HIV/AIDS Antiretroviral Drugs Used for the Treatment of HIV/AIDS
Agents Used in the Treatment of Diabetes Mellitus Agents Used in the Treatment of Diabetes Mellitus
Video: Primate Evolutionary Tree Animation

For a complete list of videos, visit our video library