UBUS 288 Practice Exam Questions And Accurate
Answers 100% Pass
The type of analytics whose models yield a best course of action to take is _____
analytics. - ANSWER Prescriptive
Data collected at the same, or approximately the same point in time for multiple subjects
are data. - ANSWER Cross-Sectional
Categorical Variables - ANSWER Nominal and Ordinal
Numerical Variables - ANSWER Interval and Ratio
Subsetting is a technique used to convert numerical values into categorical variables. -
ANSWER False; the answer is Binning
In the presence of outliers in a data set, extremely small or large values, it is preferred
to use the _____________ instead of the _____________ to impute missing variables. -
ANSWER Median; Mean
Type of analytics that aims to answer the question "What is likely to happen?" using data
and information. - ANSWER Predictive Analytics
Type of analytics that looks at data or content to figure out what caused an event to
happen. - ANSWER Diagnostic Analytics
Type of analytics that examines historical events and tries to find specific patterns in the
data. - ANSWER Descriptive Analytics
A collection of observations of well-defined data items obtained through repeated
, measurements over time - ANSWER Time-series
What are the five V's of data - ANSWER velocity, volume, value, variety and veracity
According to recent estimates, annually, the average American spends $583 on alcohol
and $1,100 on coffee. What is the relevant population? Is this Sample or Population -
ANSWER All Americans, Sample data
Research suggests that depression significantly increases the risk of developing
dementia later in life. Suppose that in a study involving 949 elderly persons, it was found
that 22% of those who had depression went on to develop dementia, compared to only
17% of those who did not have depression. Find the population relevance and the type of
data - ANSWER Population is all elderly people, the sample is 949 elderly people
A professor records the majors of her 30 students. The data accompanying this exercise
contain the relevant information. What variable is the "Major" of each student? -
ANSWER Nominal
Example of a ratio variable - ANSWER length, duration, mass, money, age
Example of Ordinal variable - ANSWER Rank (First, Second, Third), Rating Scale from
0(no pain)-10 (worst pain)
Example of Nominal variable - ANSWER country, gender, race, hair color
Example of Interval Variable - ANSWER Temperature, year
Points scored in a football game - ANSWER Numerical, discrete
A restaurant surveys its customers about the quality of its waiting staff on a scale of 1 to
4, where 1 is poor and 4 is excellent. - ANSWER Ordinal
Answers 100% Pass
The type of analytics whose models yield a best course of action to take is _____
analytics. - ANSWER Prescriptive
Data collected at the same, or approximately the same point in time for multiple subjects
are data. - ANSWER Cross-Sectional
Categorical Variables - ANSWER Nominal and Ordinal
Numerical Variables - ANSWER Interval and Ratio
Subsetting is a technique used to convert numerical values into categorical variables. -
ANSWER False; the answer is Binning
In the presence of outliers in a data set, extremely small or large values, it is preferred
to use the _____________ instead of the _____________ to impute missing variables. -
ANSWER Median; Mean
Type of analytics that aims to answer the question "What is likely to happen?" using data
and information. - ANSWER Predictive Analytics
Type of analytics that looks at data or content to figure out what caused an event to
happen. - ANSWER Diagnostic Analytics
Type of analytics that examines historical events and tries to find specific patterns in the
data. - ANSWER Descriptive Analytics
A collection of observations of well-defined data items obtained through repeated
, measurements over time - ANSWER Time-series
What are the five V's of data - ANSWER velocity, volume, value, variety and veracity
According to recent estimates, annually, the average American spends $583 on alcohol
and $1,100 on coffee. What is the relevant population? Is this Sample or Population -
ANSWER All Americans, Sample data
Research suggests that depression significantly increases the risk of developing
dementia later in life. Suppose that in a study involving 949 elderly persons, it was found
that 22% of those who had depression went on to develop dementia, compared to only
17% of those who did not have depression. Find the population relevance and the type of
data - ANSWER Population is all elderly people, the sample is 949 elderly people
A professor records the majors of her 30 students. The data accompanying this exercise
contain the relevant information. What variable is the "Major" of each student? -
ANSWER Nominal
Example of a ratio variable - ANSWER length, duration, mass, money, age
Example of Ordinal variable - ANSWER Rank (First, Second, Third), Rating Scale from
0(no pain)-10 (worst pain)
Example of Nominal variable - ANSWER country, gender, race, hair color
Example of Interval Variable - ANSWER Temperature, year
Points scored in a football game - ANSWER Numerical, discrete
A restaurant surveys its customers about the quality of its waiting staff on a scale of 1 to
4, where 1 is poor and 4 is excellent. - ANSWER Ordinal
