Reliability - characteristics of research tools, Other Management

Assignment Help:

Reliability:

Refers  to  the accuracy  and consistency  of a measuring tool. A measure is reliable when  an  individual remains nearly  the  same  in repeated measurements. Reliability  is measured by reliability coefficient  and  the estimation  of rkliability  can be  done statistically. How to estimate  the  degree  of reliability?

a)  Coefficient of  Stability  shows consistency of performance  on  a test  over  a period  of  time. It is based  on  the correlation between performances on initial test and retest after  a distinct interval. That  is,  it  involves repetition of  the same test. A  test may  be  reliable even though  it may  not be valid. A  valid  test  is usually reliable. 

b)  Coefficient of Equivalence  shows consistency of performance on different forms  of a  test. It  is based  on the correlation between performances on the different .forms administered at nearly the  same time. That &,  a second equivalent  form of  the test is  administered. 

c)  Coeflcient of Internal Consistency  shows consistency  of performance  on different  parts or items  of  the test taken at  a  single  sitting. This  coefficient is usually computed  by  "split-half'  correlation (e.g. Sperman-Brown formula), or by  using Kuder-Richardson formula. That  is,  the analysis involves subdivision of the  test  into  two  or more  equivalent fractions.  


Related Discussions:- Reliability - characteristics of research tools

Fiction - binding policy for libraries, Fiction: Fiction needs most ca...

Fiction: Fiction needs most careful consideration in view of heavy demand and use and its ephemeral nature. Still its heavy use  may prompt librarians to decide  on binding, b

Define personality, QUESTION (A) Define personality (B) Explain, wit...

QUESTION (A) Define personality (B) Explain, with example, the structure of personality according to the psychoanalytic theory (C) Defense mechanisms are unconscious stra

Rules of thumb for a competitive negotiation, Rules of thumb for a competit...

Rules of thumb for a competitive negotiation:    Stick to your planned target and walk away points.    You are likely to get a better overall deal if you make a larger nu

How is the cost of fca best defensible to the public, Q. How is the cost of...

Q. How is the cost of FCA best defensible to the public? FCA is not a fixed product it is an approach, it is potential to tailor a cost-effective FCA system to meet the require

Meaning of classification - library classification, Meaning of Classificati...

Meaning of Classification: Systematic grouping of entities (both abstract and concrete) to meet one's requirement is known as classification. Classification lies at the root o

Define the term safety culture, Question 1: (a) The accident rate of t...

Question 1: (a) The accident rate of two companies of similar size and producing identical product is found to differ. Explain possible reasons for this difference. (b) Th

Checking with the catalogue - library classification, Checking with the cat...

Checking with the catalogue: The individual classifier  who is allotted a  set of documents for processing will first  check  each item in the set with the library catalogue.

Solid waste management, The solid wastes from a summer camp with 100 childr...

The solid wastes from a summer camp with 100 children and a staff of 25 are to be collected once per week. If bottles and cans (representing 20% of the weight) are removed, paper

Hrd in. indian libraries and information centres , HRD IN. INDIAN LIBRARIES...

HRD IN. INDIAN LIBRARIES AND INFORMATION CENTRES HRD as discussed in this Unit may seem to be somewhat irrelevant to the conditions prevailing in Indian libraries and informa

Main entry and subject headings - cataloguing work, Subject Headings: ...

Subject Headings: After classification work, logically the next step in the technical processing of a document is the work of assigning appropriate  subject headings. These a

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd