BCOR 2205 Final Review Questions and
Answers 100% Pass
What are the Four V's of Big Data? - ✔✔Volume, Velocity, Variety, Veracity
What does volume mean in big data? - ✔✔scale of data
what is a continuous variable - ✔✔infinite number, like any point on the number line
What is a discrete variable? - ✔✔finite number of options
ex. country of origin, letter grade, etc.
what is categorical data - ✔✔Data which has no numbers but can be put into categories
ex. Occupation {dentist, teacher, student}
what is binary data - ✔✔data that has only two categories or states
ex. 0 or 1, no or yes
What is a Boolean? - ✔✔True or False
what is string data - ✔✔words
what data type would cover when an item was purchased - ✔✔Date and Time
Emily Charlene, All Rights Reserved © 2025 1
, What does velocity mean in big data? - ✔✔speed of data
What does Veracity mean in big data? - ✔✔certainty of data
What does variety mean in big data? - ✔✔diversity of data
what is analytical data? - ✔✔encomapsses all organizational data, its main purpose is to
support managerial tasks
what is transactional data? - ✔✔all the data contained within a business process or unit
of work
how do you calculate accuracy in a confusion matrix - ✔✔accuracy = TP + TN / All
Cases
how do you calculate the true positive rate - ✔✔true positive rate = TP / TP + FN
how do you calculate the true negative rate - ✔✔True negative rate = TN / TN + FP
what is prescriptive data? - ✔✔prescriptive data finds a solution to an issue in addition
to finding the problem
what is predictive data - ✔✔predicts what will happen in the future based on the data
what does ETL mean? - ✔✔Extract, Transform, Load
rank Wan, Lan, and Man in order largest to smalles - ✔✔Wan, Man, Lan
What is a database? - ✔✔An organized collection of related data
Emily Charlene, All Rights Reserved © 2025 2
Answers 100% Pass
What are the Four V's of Big Data? - ✔✔Volume, Velocity, Variety, Veracity
What does volume mean in big data? - ✔✔scale of data
what is a continuous variable - ✔✔infinite number, like any point on the number line
What is a discrete variable? - ✔✔finite number of options
ex. country of origin, letter grade, etc.
what is categorical data - ✔✔Data which has no numbers but can be put into categories
ex. Occupation {dentist, teacher, student}
what is binary data - ✔✔data that has only two categories or states
ex. 0 or 1, no or yes
What is a Boolean? - ✔✔True or False
what is string data - ✔✔words
what data type would cover when an item was purchased - ✔✔Date and Time
Emily Charlene, All Rights Reserved © 2025 1
, What does velocity mean in big data? - ✔✔speed of data
What does Veracity mean in big data? - ✔✔certainty of data
What does variety mean in big data? - ✔✔diversity of data
what is analytical data? - ✔✔encomapsses all organizational data, its main purpose is to
support managerial tasks
what is transactional data? - ✔✔all the data contained within a business process or unit
of work
how do you calculate accuracy in a confusion matrix - ✔✔accuracy = TP + TN / All
Cases
how do you calculate the true positive rate - ✔✔true positive rate = TP / TP + FN
how do you calculate the true negative rate - ✔✔True negative rate = TN / TN + FP
what is prescriptive data? - ✔✔prescriptive data finds a solution to an issue in addition
to finding the problem
what is predictive data - ✔✔predicts what will happen in the future based on the data
what does ETL mean? - ✔✔Extract, Transform, Load
rank Wan, Lan, and Man in order largest to smalles - ✔✔Wan, Man, Lan
What is a database? - ✔✔An organized collection of related data
Emily Charlene, All Rights Reserved © 2025 2
