D1_L4: Research Statistics

Question 1

Independent variable

Answer 1

The variable that is manipulated in a study
Affects the dependent variable

Question 2

Dependent variable

Answer 2

The variable that is measured to see if the independent variable was effective
Outcome of interest

Question 3

Nominal variables

Answer 3

Think: NOminal NO order
Named attributes that are categories (order doesn’t matter)
Ex: marital status, blood type

Question 4

Ordinal variables

Answer 4

Think: ORDinal - ORDered
Named attributes where order matters
Ex: Stages of pressure ulcers, star ratings

Question 5

Discrete variables

Answer 5

Think: DIScreTe, DISTinctive
Restricted to a countable, distinctive finite set of indivisible values or categories within a range
Ex: number of times a patient has been contacted

Question 6

Continuous variables

Answer 6

Can be any value w/in range, is divisible
Ex: Temperature, weight, speed

Question 7

Dichotomous variables

Answer 7

Think: Di = 2
Only 2 possible outcomes/levels
Ex: disease or no disease