Question 1

Regression is a prediction based on time-series information.

Accepted Answer

Regression is a statistical method used to model the relationship between a dependent variable and one or more independent variables, not specifically based on time-series information. Time-series forecasting is a different technique specifically for predicting future values based on past time-sequenced data points.

Question 2

Clustering assigns records to one of a predefined set of classes.

Accepted Answer

Clustering is a type of unsupervised learning that groups data points into clusters based on their similarity, without using predefined classes.

Question 3

Affinity analysis determines values for an unknown continuous variable behavior or estimated future value.

Accepted Answer

Affinity analysis is used to find patterns of items that frequently occur together in transactions, not for estimating values of unknown continuous variables.

Question 4

Advanced analytics processes and manages algorithms across many machines in a computing environment.

Accepted Answer

The answer of Advanced analytics processes and manages algorithms across...

Question 5

Infographics can present the results of large data analysis looking for patterns and relationships that monitor changes in variables over time.

Accepted Answer

Infographics are visual representations of information, data, or knowledge intended to present information quickly and clearly. They can effectively summarize large datasets, highlight patterns and relationships, and illustrate changes in variables over time, making complex data more accessible.

Question 6

Data-mining tools use a variety of techniques to find patterns and relationships in large volumes of information that predict future behavior and guide decision making.

Accepted Answer

Data-mining tools analyze large volumes of data to discover patterns and relationships, which can then be used to predict future behavior and inform decision-making processes.

Question 7

Affinity grouping analysis determines the relationship between variables and frequency of the relationship.

Accepted Answer

Affinity grouping analysis is used to identify patterns or relationships between variables, specifically focusing on how often certain groups of variables are associated with each other.

Question 8

Cluster analysis is a technique used to divide an information set into mutually exclusive groups.

Accepted Answer

Cluster analysis is used to classify objects or data points into groups (clusters) where objects in the same group are more similar to each other than to those in other groups, effectively dividing the information set into mutually exclusive groups.

Question 9

Classification analysis assigns information or data into one of a predefined set of classes.

Accepted Answer

Classification analysis is a type of supervised learning in machine learning and statistics where the task is to assign data points (information or observations) to one of several predefined categories or classes based on their features.

Question 10

Estimation analysis determines which things go together.

Accepted Answer

Estimation analysis is primarily used to predict or estimate the value of a variable or outcome based on one or more input variables, rather than determining which things go together, which is more aligned with correlation or association analysis.

Question 11

Classification segments a heterogeneous population of more homogeneous subgroups.

Accepted Answer

The answer of Classification segments a heterogeneous population of more...

Question 12

Analysis paralysis occurs when the user goes into an emotional state of over-analyzing (or overthinking) a situation so that a decision or action is never taken, in effect paralyzing the outcome.

Accepted Answer

Analysis paralysis describes a situation where overthinking or overanalyzing leads to a failure to make a decision or take action, effectively freezing any progress or outcome.

Question 13

Clustering segments a heterogeneous population of more homogeneous subgroups.

Accepted Answer

Clustering is a technique used to group a set of objects in such a way that objects in the same group (or cluster) are more similar to each other than to those in other groups, effectively segmenting a heterogeneous population into more homogeneous subgroups.

Question 14

Data artist is a business analytics specialist who uses visual tools to help people understand complex data.

Accepted Answer

A data artist is indeed a specialist who combines skills in data analytics with creative visual design to present complex data in an understandable and engaging way, often using visual tools and techniques.

Question 15

Optimization is a statistical process for estimating the relationships among variables.

Accepted Answer

Optimization is a mathematical process used for finding the best solution from a set of available alternatives by minimizing or maximizing an objective function, not for estimating relationships among variables.

Question 16

Infographics (information graphics) display information graphically so it can be easily understood.

Accepted Answer

Infographics use visual representations of information, data, or knowledge intended to present information quickly and clearly.

Question 17

Estimation determines values for an unknown continuous variable behavior or estimated future value.

Accepted Answer

Estimation is the process of finding an approximation, which is a value that is usable for some purpose even if input data may be incomplete, uncertain, or unstable. It indeed involves determining values for an unknown continuous variable behavior or estimated future value based on available data.

Question 18

Classification organizes data or information into predefined groups.

Accepted Answer

The answer of Classification organizes data or information into predefined...

Question 19

Prediction is a statistical process that finds the way to make a design, system, or decision as effective as possible, for example, finding the values of controllable variables that determine maximal productivity or minimal waste.

Accepted Answer

Prediction involves estimating future outcomes based on patterns in data, while the description provided refers to optimization, which is the process of making a system or design as effective as possible by finding the optimal values of controllable variables.

Question 20

Web mining analysis describes technologies that allow users to see, or visualize, data to transform information into a business perspective.

Accepted Answer

Web mining analysis involves extracting useful information from web data, not specifically about visualization or transforming data into a business perspective.

Quiz 8: Understanding Big Data and Its Impact on Business