HSS 2381 Chapter Notes - Chapter 1: Pressure Ulcer, Descriptive Statistics, Pulse Oximetry
17 Oct 2016
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Abstract concept (in characteristics or behaviors) ex. Variables: something has to vary: independent variable: the thing that acts on or influences or impacts the other ex. impact of gender on anxiety. Sometimes its just a characteristic that you do not have an control over ex gender, smoking. Other times they are created by the reseachers becomes an: dependent variable: outcome typically what we"re always intervention interesed in. Conceptional definition: theoretical meaning of underlying concept. Operational definition: what is used to measure the variable. Discrete variables: solid numbers (whole numbers: finite number of values between two points. Continuous variables: not neces. a whole number. Taking a quality and assigning a number to it. Numbers cant be treated numerically (numbers have no quantitative meaning) Has characteristics of nominal & ordinal but has precison. Ex. temperature (0 does not mean no temperature, but cold) Distance between values are assumed to b equal. Difference between 70 & 75 same as between 75 & 80.
