Define paired comparison (preference) test, Chemistry

Assignment Help:

Paired Comparison (Preference) Test

In this test the assessor is presented with two coded products and asked to indicate whether there is a preference between them. The test  design should ensure that each sample is assessed equally often in first and second position.
 
The panel size should be at least 50. If the panel is drawn from staff on site, care should be taken to exclude people who may have particular knowledge of the nature of the work or knowledge of the objectives for  carrying out the work. Bear in mind that such a panel is
unlikely to be representative of the target consumer population.
 
At the simplest level the assessor is asked to state which sample is preferred and to offer reasons for preference. No - preference discussions are usually allowed and although, they are excluded from analysis, they are usually reported. This is a two - tailed test, as it is not known in advance which product is preferred, and both directions are of equal interest. The basic statistical analysis is by reference to two - tailed binomial tables, and the reasons for preference are tabulated.
 
Comparative assessments of acceptability or preference can be undertaken using the paired (preference) method or by the ranking test.


Related Discussions:- Define paired comparison (preference) test

Biomolecules - organic chemistry, Biomolecules All living bodies are ma...

Biomolecules All living bodies are made up of various lifeless substances that are availabe in their cells in a extremely complex but highly organized form. These are known as

ATOMIC STRUCTURE, CALCULATE THE MOMENTUM OF APARTICLEWHICH HAS WAVELENGTH ...

CALCULATE THE MOMENTUM OF APARTICLEWHICH HAS WAVELENGTH OF 2A

Reaction, How do you mean by chemistry?

How do you mean by chemistry?

Colloidal particles, a) During coagulation, the colloidal particles stay un...

a) During coagulation, the colloidal particles stay un-aggregated because: b) The aim during water softening is to precipitate calcium and magnesium as calcium carbonate and mag

Describe the forms of energy, Q. What are the diffrent forms of energy? ...

Q. What are the diffrent forms of energy? Ans: Kinetic energy is energy of motion. Gas molecules of a given substance move much more rapidly than do the molecules in the soli

Vat dyes - classification of dyes, Vat dyes: These dyes are insoluble i...

Vat dyes: These dyes are insoluble in water and cannot be helpful directly. These dyes on decline along with sodium hydrosulphite (NaHSO 3 ) in a vat make a soluble compound th

Illustrate structure of the water molecule, Q. Illustrate Structure of the ...

Q. Illustrate Structure of the Water Molecule? Ans. A water molecule is composed of two hydrogen atoms and one oxygen atom covalently bonded together. The following anim

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