Sampling, Article Review, and Scales of Measurement

Define a Population . Based on the definition of Walpole and Myers (1985 , it includes all possible values with a particular characteristic for a specific group of objects

Define a Sample . It is a part of the populations selected and used in the analysis and is identified based on some rule or plan

Provide an example of a research scenario and then discuss the Population and the Sample in the context of the scenario (2-3 sentences . Example is a study on the response of viewers to a product commercial . The population includes all the

viewers that have seen the commercial . If the researcher picks one viewer and interviews him , that person is a sample of the population

Define Bias in the context of research . Bias in research is incorrectness of results . Usual causes are choice of sample that does not represent the population being studied , incorrect survey forms and wrong technique used for the interpretation of data

Indentify and define the four levels of measurement The four levels of measurement are the following

Nominal-It is categorical measurement . The data is classified under some categories . For example , a person 's gender is either male or female . We have no means of knowing which is higher between the two though we can determine if they are equal (e .g . both male

Ordinal- It measures according to magnitude . A good example is educational attainment . Though we cannot quantify the exact value of the difference of high school and elementary , we know that high school...