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

Tools and techniques used for quality planning, T ools and techniques used...

T ools and techniques used for quality planning Let us now see some of the tools and techniques used for quality planning. They are: C ost /benefit analysis: This is an

Advantages of ordering procedure, Advantages of Ordering procedure: 1)...

Advantages of Ordering procedure: 1)  Agents frequently allow a certain percentage of discount over the subscription rates of some periodicals where publishers do not offer an

Range of network services, The Range of Network Services   The range o...

The Range of Network Services   The range of services provided by many resource sharing networks include storage and retrieval of data such as factual, physical and bibliograp

Explain critical ethical issues facing knowledge management, QUESTION (...

QUESTION (a) What are some of the major types of Knowledge Management roles that exist in organizations today? (b) What types of competencies should be present in a good Kno

Practice of Management, Mr. Vincent the manager of a large supermarket was ...

Mr. Vincent the manager of a large supermarket was taking a management course in the evening program at the local collage. The professor had given an interesting but Mr. Vincent th

Reader activity area in library building-library management, Reader Activi...

Reader Activity Area  in library building-library management Reader Depending on the size and nature of the library, there may be one or more reading rooms. A reading room for

What is an organisational design, Question 1: What are the needs for ma...

Question 1: What are the needs for making organisational change? Explain organizational change Requirements for making organizational change Question 2: Wha

Identification based trust and calculus based trust, Question 1 Differe...

Question 1 Differentiate between identification based trust and calculus based trust. Question 2 M. Thomas, the Managing Director of a company has recently attended a w

Critically analyse the potential evils of bureaucratization, QUESTION 1 ...

QUESTION 1 Max Weber systematized the organization model of Bureaucracy (a) List and describe briefly the distinguishing features of bureaucracy (b) Critically analyse th

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