ACTUAL Exam Questions and CORRECT
Answers
Data processing - CORRECT ANSWER -user knows what he/she wants and has a
function to compute it
The time series is shifted back by N observations. - CORRECT ANSWER -What happens
when a time series is lagged for N observations?
Querying - CORRECT ANSWER -user knows what he or she wants and can describe it
Navigation - CORRECT ANSWER -user knows what he or she wants and cannot describe
it or locate it
Exploration - CORRECT ANSWER -user doesn't know what he or she wants. Wants to
acquire new knowledge and reveal new facts
Analysis, Comparison, Aggregation, Transformation, Visualization - CORRECT
ANSWER -What are the five types of exploration tools?
Volume, velocity, variety - CORRECT ANSWER -3Vs
HMLE - CORRECT ANSWER -High dimensional (lots of different things we want to
explore)
Multi modal (different ways needed to visualize it)
inter-Linked (data is linked, sometimes null, sometimes implicit)
, Evolving (underlying patterns change)
INS - CORRECT ANSWER -Imprecision
Noise
Sparsity
Cognition - CORRECT ANSWER -The mental action of efficiently and effectively being
able to process information into thoughts, knowledge, and insights
Visualization - CORRECT ANSWER -Graphically representing data to assist the
processing of information into knowledge, insights, and thoughts.
Uses exploratory data analysis to find trends and patterns in datasets.
Main components of a sequence - CORRECT ANSWER -starting point, ending point,
length
Data Deluge - CORRECT ANSWER -A vast increase in the amount of data generated by
individuals and businesses.
Dynamic visualization - CORRECT ANSWER -displays a single interactive visualization
of data
Features - CORRECT ANSWER -vector representations of objects in a dataset
Schema - CORRECT ANSWER -What is the term that describes the structure and
properties of a data collection?