QUESTION 5 a) A scale refers to a tool or mechanism by which individuals are differentiated as to how they differ from one another on the variables of interest. Identify the purpose of using nominal and ordinal scale and provide a relevant example of variable that is applicable for each scale. (4 Marks) b) The reliability of a measure is an indication of stability and consistency with which the instrument measures the concept and helps to assess the "goodness" of a measure. Identify THREE (3) procedures to be taken in conducting test-retest reliability. (3 Marks) (Total: 7 Marks) QUESTION 6 a) A researcher distributed questionnaires to 70 customers he met at a supermarket. Identify the most appropriate sampling technique for this study. (2 Marks) b) Describe a relevant sampling technique for a better generalization of the research findings. (2 Marks) (Total: 4 Marks) QUESTION 7 a) Discuss TWO (2) methods for distributing questionnaires. Provide a benefit for each of the methods stated. (4 Marks) b) Interviewing participants or respondents is one of the methods frequently employed to gather data. Determine THREE (3) effective ways for designing the interview questions that will be applied