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

Author Question: What is validity? How does it relate to reliability? What will be an ideal ... (Read 53 times)

imanialler

  • Hero Member
  • *****
  • Posts: 539
on: Jun 22, 2018
What is validity? How does it relate to reliability?
 
  What will be an ideal response?

Question 2

What is reliability?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

GCabra

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jun 22, 2018
Answer to Question 1

Without reliability, you have no chance for general accuracy. Thus, reliability is a precondition for validity (i.e., accuracy). We then assume that in any good study, the instruments used have acceptable reliability and validity. If they do not, then the results cannot be trusted and are of no use to you, just as the results of the wildly swinging weight scale are of no use to you.

Answer to Question 2

Instruments must be reliable to be useful. Reliability refers to consistency. If you step on a weight scale three times within a minute, assuming you made no changes (removed no clothing, drank no water, etc.), you should have pretty consistent weight readings if your scale is reliable. If your readings swing wildly by 5 or 10 pounds each time you step on the scale, you know you have an unreliable instrument.


imanialler

  • Member
  • Posts: 539
Reply 2 on: Jun 22, 2018
Great answer, keep it coming :)

  • Member
  • Posts:
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Four hypotheses on how populations might relate to one another along an environmental gradient. Four hypotheses on how populations might relate to one another along an environmental gradient.
Validity versus Reliability Validity versus Reliability
Cultures Ideal Body Types Cultures Ideal Body Types
The Number of Children Americans Think Are Ideal The Number of Children Americans Think Are Ideal
What are examples of ideal forms? What are examples of ideal forms?
A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ... A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ...
Video: Dorsal Recumbent Position

For a complete list of videos, visit our video library