Problem
Part 1: Read the following statements carefully and underline the correct answer that comes immediately after each statement.
a. On this scale of measurement, the classes of objects have no numerical value? - nominal - ordinal - apart - of proportion
b. Which of the following is not a method for evaluating the precision of a measuring instrument? - test-retest - transcultural - parallel shapes - half.
c. Which of the following is not a method for assessing the validity of a measuring instrument? - content - of built - test-retest - transcultural.
d. Which of the following represents a qualitative data collection method? - scale questionnaire - structured observation - directed interview - undirected interview
e. Which of the following represents a quantitative data collection method? - undirected interview - semi-structured interview - unstructured observation - discussion group - scale questionnaire
Part 2: Read these questions carefully and answer
a. Why do we sometimes need NON-proportional stratified sampling? Give example. (Answer should start with a brief definition of stratified sampling)
b. What is the difference between reliability and validity of measuring instruments? Give example. (The response should include brief definitions of the two concepts - reliability and validity)