Chapter 9

GROUP TWO


SUMMARY CHAPTER 9: MEASUREMENT, SCALING REALIABILITY, VALIDITY

This chapter deals with different types of measurement and techniques use in research, scaling is used to measure the operationally define dimension and element of a variable. (Rating, and ranking scaling). Ranking scales is used to tap preferences between two or more object, this ranking may not give definitive clues to some of the answers sought. Paired comparison scale is used among small number of objects, respondents are asked to choose between two object at a time.
Goodness of measures, it is very important that the instrument we develop to measure a particular concept is indeed accurately measuring the variable. Reliability of a measure indicates the extent to which it is without bias and hence ensures consistent measurement across time and across the various items in the instrument. Managers knowing different scales and scaling techniques help to administer short surveys by designing questions that use ranking scales as appropriates.