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

Practice, P ractice Practice can be developed when the community keeps...

P ractice Practice can be developed when the community keeps continuous interactions with the domain. The members of the community of practices are the practitioners. They wil

Classified catalogue code -british museum cataloguing rules , Classified Ca...

Classified Catalogue Code: Ranganathan (Shiyali Ramamrita) (1892-1972). Classified Catalogue Code with Additional Rules for Dictionary Catalogue Code. Ed 5. Assisted by A Neel

Centralised purchasing, What are the characteristics of centralised purchas...

What are the characteristics of centralised purchasing?

Explain steps involved in decision making, Question 1: (a) Decision mak...

Question 1: (a) Decision making is the essence of management, and every decision starts with a problem. (i) What is a decision? (ii) What is a problem? (b) Decision m

Grunig-hunts public relations model, Problem 1 Strong employee relation...

Problem 1 Strong employee relations equals solid organizations. Companies that interact effectively with workers financially outperform those that don't. Identify and descri

Relationship to libraries, Relationship to Libraries: Document collect...

Relationship to Libraries: Document collection is a major function of all information service units. Libraries are traditionally known to be centres for collecting and storing

ASSIGNMENT , How will you influence people to strive willingly for group o...

How will you influence people to strive willingly for group objectives in your organisation(Target based industry) ? apply your interpersonal influence through communication proces

Sponsorship, discuss under definition the channel of marketing communicatio...

discuss under definition the channel of marketing communication

Left or Right, Whom do you think Rajender will eat with ?

Whom do you think Rajender will eat with ?

Reprography service, Reprography Service: We have already mentioned ab...

Reprography Service: We have already mentioned above that if the original document is not available, its photocopy is provided by a document delivery service. The introduction

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