CONTENT:
Introduction to Probability Theory and Heath StatisticsNameCourseInstructorDate PART AProvide a brief explanation where indicated./> A researcher studying lifespan categorizes individuals into single, married, divorced, or widowed. What type of variable measurement is this? This is a nominal scale of measurement on the marital status of people categorized into groups (Munro, 2005). This is because the data is non-overlapping as is the case of nominal scales where there is mutual exclusivity. All the observations on marital status fall into any of the categories, and all the observations in each category must be the same with other observations in the same category. Furthermore, no ranking or order can be associated with data on the categories. A cognitive scientist places her subjects into categories based on how anxious they tell her that they are feeling: “not anxious”, “mildly anxious”, “moderately anxious” and “severely anxious”, and she uses the numbers 0, 1, 2 and 3 to label categories where lower numbers indicate less anxiety. What type of variable measurement is this? Are the categories mutually exclusive? -This is an ordinal level of measurement as the numbers give an order to the level of anxiety experienced by the participants (Munro, 2005). The four categories are all inclusive and mutually exclusive. As one moves from 0 to 4, the level of anxiety increases, and hence, the variables are ordered, but the difference between two categories is not constant. In other words, there is an explicit relationship among the categories from feeling’ “not anxious” to “severely anxious”A Physician diagnoses the presence or absence of disease (i.e. yes or no). What type of variable measurement is this?- This is a nominal level variable that is dichotomous, as the variables are classified based on whether one has a disease or not.