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

Preperation of a library programme - library building, Preperation of a Lib...

Preperation of a Library Programme of library building in library management A written building  programme (or proposal) is must for any library. It is a basic statement about

Case study: royal blue, Case Study Royal Blue the national passenger ...

Case Study Royal Blue the national passenger carrier for commercial flight, appointed a new advertising company, Amadeus. Amadeus was hired to spearhead a more customer orien

Added entries and tracing - cataloguing work, Added Entries: As menti...

Added Entries: As mentioned earlier, Added Entries are made using the information given in the Main Entry. The number and  type of Added Entries required will vary according

Planning for quality, P lanning for Quality All projects have specific...

P lanning for Quality All projects have specific measurable objectives and goals to achieve. Planning  quality  is  the  first  step  which  systematically translates  the obj

Main determinants that affect the shaping of business policy, QUESTION 1 ...

QUESTION 1 (a) Explain the four characteristics of service and discuss the challenges that these characteristics pose to service products. Use relevant examples for each charac

Development of the quality standards, The Development of the Quality Standa...

The Development of the Quality Standards Quality  standards  evolved  with  quality  management  movement  which gained  importance  after  the  Second  World  War.  The  contr

Organisation Behaviour, Rajender Kumar was a production worker at competent...

Rajender Kumar was a production worker at competent Motors Limited (CML) which made components and accessories for the automotive industry. He had worked at CML for almost seven ye

Library organisational structure -library management, LIBRARY ORGANISATION...

LIBRARY ORGANISATIONAL  STRUCTURE   OBJECTIVES  We have learnt in Unit 1 that an organisation has to be structured in order to achieve its goals and objectives. In this

Describe the communication difficulties that may exist, Question 1 You ...

Question 1 You have been requested by your Superior to deliver a speech to a hundred parents on the importance of a balanced diet for their children. Describe the communication

Scope of materials handling, Scope of Materials Handling Materials han...

Scope of Materials Handling Materials handling is spread over to many different industries and fields of engineering. The followings table gives its broad application.

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