BQA Final Exam UPDATED ACTUAL
Exam Questions and CORRECT 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
statistical thinking - CORRECT ANSWER - an ability to apply rational thought and the
science of statistics to critically assess data and to make intelligent/objective decisions,
inferences, and generalizations about the statistical problem investigated
rightward skewness - CORRECT ANSWER - mean > median > mode
(positive)
leftward skewness - CORRECT ANSWER - mean < median < mode
(negative)
Exam Questions and CORRECT 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
statistical thinking - CORRECT ANSWER - an ability to apply rational thought and the
science of statistics to critically assess data and to make intelligent/objective decisions,
inferences, and generalizations about the statistical problem investigated
rightward skewness - CORRECT ANSWER - mean > median > mode
(positive)
leftward skewness - CORRECT ANSWER - mean < median < mode
(negative)
