BQA Pre-Test Questions & Answers.

BQA Pre-Test Questions & Answers. descriptive statistics - correct answer A procedure that uses numerical and graphical techniques to summarize data and to reveal patterns of information in a presentable and understandable form inferential statistics - correct answer a technique by which estimations, conclusions, predictions, or other generalizations are drawn about the characteristics of a larger set of data (population) on the basis of partial information (sample) population - correct answer all measurements of interest; includes the entire set of units that we are interested in studying sample - correct answer a partial collection of observations taken from a given population or is a subset of all the units of a population variable - correct answer a characteristic or an attribute of an individual population unit that shows variability or variation over time quantitative variable - correct answer values can be recorded or measured on a continuous scale or in an interval (ex: height, weight, etc.) qualitative variable - correct answer values can only be assigned to one of the several mutually exclusive categories and cannot be measured on a continuous scale (ex: eye color, hair color, etc.) measurement - correct answer a process in which we assign numbers to observations according to a set of rules levels of measurement - correct answer a classification of measurement scales according to the amount of information about observations recorded 1. nominal 2. ordinal 3. interval 4. ratio published materials - correct answer data or information that has been published and that is available in a book, journal, newspaper, microfilm, or even on the web survey - correct answer conducting a form of social investigation in a less restrictive or controlled environment to obtain new facts or to draw new conclusions on existing knowledge designed experiment - correct answer the process of planning and executing an experiment in which researchers exert strict control over the experimental units (objects, people, products, or events) in the study observational study - correct answer allows the researcher to observe the experimental units or the social phenomena directly in their natural setting and to record the variable(s) of interest according to certain guidelines