MAT133 EXAM QUESTIONS WITH VERIFIED
ANSWERS [ GRADED A+]
Binary variable - ✔✔Some categorical variables have only two values.
Bivariate data sets - ✔✔Two variables.
Bounce rate - ✔✔Shows the percentage of viewers who leave the site after
viewing only the homepage.
Business analytics - ✔✔To support decision making, to recognize anomalies that
require tactical action, or to gain strategic insight to align business processes with
business objectives.
©morren2024/2025.Year published 2024.
,Categorical data - ✔✔(Also called qualitative data) have values that are described
by words rather than numbers.
Census - ✔✔An examination of all items in a defined population.
Click-through rate - ✔✔The percentage of viewers who click on the ad when they
view it on a webpage.
Cluster sample - ✔✔Taken from strata consisting of geographical regions.
Coding - ✔✔The values of the categorical variable might be represented using
numbers.
Continuous data - ✔✔A numerical variable that can have any value within an
interval is continuous.
©morren2024/2025.Year published 2024.
,Convenience sampling - ✔✔To grab whatever sample is handy.
Coverage error - ✔✔When some important segment of the target population is
systematically missed.
Critical thinking - ✔✔Being able to evaluate evidence, to tell fact from opinion, to
see holes in an argument, to tell whether cause and effect has been established
and to spot illogic.
Cross-sectional data - ✔✔If each observation represents a different individual unit
(e.g., a person, firm, geographic area) at the same point in time.
Data - ✔✔A plural, and data set to refer to a collection of observations taken as a
whole.
©morren2024/2025.Year published 2024.
, Data science - ✔✔A trilogy of tasks involving data modeling, analysis, and decision
making.
Data set - ✔✔Consists of all the values of all of the variables for all of the
observations we have chosen to observe.
Descriptive analytics - ✔✔Tools to analyze historical data and help them identify
trends and patterns.
Descriptive statistics - ✔✔Refers to the collection, organization, presentation, and
summary of data (either using charts and graphs or using a numerical summary).
Discrete data - ✔✔A variable with a countable number of distinct values.
Empirical data - ✔✔Data collected through observations and experiments.
©morren2024/2025.Year published 2024.
ANSWERS [ GRADED A+]
Binary variable - ✔✔Some categorical variables have only two values.
Bivariate data sets - ✔✔Two variables.
Bounce rate - ✔✔Shows the percentage of viewers who leave the site after
viewing only the homepage.
Business analytics - ✔✔To support decision making, to recognize anomalies that
require tactical action, or to gain strategic insight to align business processes with
business objectives.
©morren2024/2025.Year published 2024.
,Categorical data - ✔✔(Also called qualitative data) have values that are described
by words rather than numbers.
Census - ✔✔An examination of all items in a defined population.
Click-through rate - ✔✔The percentage of viewers who click on the ad when they
view it on a webpage.
Cluster sample - ✔✔Taken from strata consisting of geographical regions.
Coding - ✔✔The values of the categorical variable might be represented using
numbers.
Continuous data - ✔✔A numerical variable that can have any value within an
interval is continuous.
©morren2024/2025.Year published 2024.
,Convenience sampling - ✔✔To grab whatever sample is handy.
Coverage error - ✔✔When some important segment of the target population is
systematically missed.
Critical thinking - ✔✔Being able to evaluate evidence, to tell fact from opinion, to
see holes in an argument, to tell whether cause and effect has been established
and to spot illogic.
Cross-sectional data - ✔✔If each observation represents a different individual unit
(e.g., a person, firm, geographic area) at the same point in time.
Data - ✔✔A plural, and data set to refer to a collection of observations taken as a
whole.
©morren2024/2025.Year published 2024.
, Data science - ✔✔A trilogy of tasks involving data modeling, analysis, and decision
making.
Data set - ✔✔Consists of all the values of all of the variables for all of the
observations we have chosen to observe.
Descriptive analytics - ✔✔Tools to analyze historical data and help them identify
trends and patterns.
Descriptive statistics - ✔✔Refers to the collection, organization, presentation, and
summary of data (either using charts and graphs or using a numerical summary).
Discrete data - ✔✔A variable with a countable number of distinct values.
Empirical data - ✔✔Data collected through observations and experiments.
©morren2024/2025.Year published 2024.
