Acct 3130 - Exam 1 (Ch. 1,2,3 MC Questions)

Big Data is often described by the three Vs, or

volume, velocity, and variety

Which approach to Data Analytics attempts to assign each unit in a population into a small set of classes (or groups) where the unit best fits?

classification

Which approach to Data Analytics attempts to identify similar individuals based on data known about them?

similarity matching

Which approach to Data Analytics attempts to predict relationship between two data items?

Link prediction

Which of these terms is defined as being a central repository of descriptions for all of the data attributes of the dataset?

Data dictionary

Which skills were not emphasized that analytic-minded accountants should have?

classification of test approaches

Which skills were not emphasized that analytic-minded accountants should have?

data and systems analysis and design

The IMPACT cycle includes all except the following process

visualize the data

The IMPACT cycle includes all except the following process

data preparation

By the year 2020, about 1.7 megabites of new information will be created every:

second

Mastering the data can also be described via the ETL process. The ETL process stands for:

extract, transform, and load data

Which of the following describes part of the goal of the ETL process

identify and obtain the data needed for solving the problem

The advantages of storing data in a relational database include which of the following

help in enforcing business rules and integrating business processes

the purpose of transforming data is

to validate the data for completeness and integrity

which attribute is required to exist in each table of a relational database and serves as the "unique identifier" for each record in a table?

primary key

the metadata that describes each attribute in a database is which of the following?

data dictionary

as mentioned in the chapter, which of the following is not a common way that data will need to be cleaned after extraction and validation?

clean up trailing zeros

why is Supplier ID considered to be a primary key for a Supplier Table

it contains a unique identifier for each supplier

What are attributes that exist in a relational database that are neither primary nor foreign keys

descriptive attributes

Which of these is not included in the five steps of the ETL process

scrub the data

________ is a set of data used to assess the degree and strength of a predicted relationship

Test data

Data that are organized and reside in a fixed field with a record or a file. Such data are generally contained in a relational database or spreadsheet and are readily searchable by search algorithms. The term matching this definition is:

structured data

An observation about the frequency of leading digits in many real-life sets of numerical data is called

Benford's Law

Which approach to data analytics attempts to predict a relationship between two data items?

linek prediction

In general, the more complex the model, the greater the change of

overfitting the data

In general, the simpler the model, the greater the chance of:

underfitting the data

_________ is a discriminating classifier that is defined by a separating hyperplace that works first to find the widest margin (or biggest pipe) and then works to find the middle line

support vector machines

________ mark the split between one class and another

decision boundaries

models associated with regression and classification data approaches have all except this important part:

test data

Which approach to data analytics attempts to assign each unit in a population into a small set of classes where the unit belongs?

classification