As of Feb 2018, the average pay for a Welding Inspector (Certified) is $26.53 /hr or $61,817 annually.
Two Types of Population in Research Target Population. Target population refers to the ENTIRE group of individuals or objects to which researchers are interested in generalizing the conclusions. The target population usually has varying characteristics and it is also known as the theoretical population. Accessible Population
Demographics are useful and widely used but should be coupled with other segmentation variables to effectively define a target market. 1  Gender: Due to physiological differences, males and females have very different product demands and preferences, for example, in clothing, hair care, and other lifestyle items.