EBTM 350 CH. 10,11,16 QUESTIONS WITH VERIFIED
ANSWERS
What is included in the data mining approach of data exploration and reduction? -
Answers - identfying groups in which the elements of the groups are in some ways
similar
What formula calculates the Euclidean distance between X and Y? - Answers - Square
Root (X1-Y1)^2+(X2-Y2)^2+...+(XN-YN)^2
What is true of cluster analysis? - Answers - It does not provide a definitive answer from
analyzing the data.
What is true of hierarchical clustering? - Answers - The data are not partitioned into a
particular cluster in a single step.
Determine if the statement is true or false.
In the average linkage clustering, the distance between two clusters is defined as the
average of distances between all pairs of objects, where each pair is made up of one
object from each group. - Answers - TRUE
In what method is the distance between groups defined as the distance between the
closest pair of objects, where only pairs consisting of one object from each group are
considered? - Answers - single linkage clustering
What is the distance between two clusters in a complete linkage clustering? - Answers -
the distance between the most distant pair of objects, one from each group
What is the first stage of joining clusters in agglomerative hierarchical clustering? -
Answers - Joining two clusters that are closest to each other
What is true of divisive clustering methods that makes them different from
agglomerative clustering methods? - Answers - They separate n objects successively
into finer groupings
What uses the sum of squares between the objects in the cluster when measuring their
distances? - Answers - Ward's hierarchical clustering
In a k-nearest neighbors algorithm, what is similarity of records based on? - Answers -
The closeness of a record to numerical predictors in the other records
, Spam filtering for emails can be seen as an example of what type of approach of data
mining? - Answers - classification
In classification, what would be considered as a categorical variable of interest for a
credit approval decision for a requester? - Answers - rejecting or accepting credit
approval
What data-mining method provides probabilistic if-then statements? - Answers -
association rule
Determine if the statement is true or false.
Lagging and leading measures in cause-and-effect modeling are uncorrelated. -
Answers - FALSE
In the cause-and-effect modeling, internal metrics, such as employee satisfaction,
productivity, and turnover are considered to be what kind of measures? - Answers -
leading
What data mining approach involves the developing of analytic models to describe the
relationship between metrics that drive business performance like profitability, customer
satisfaction, or employee satisfaction? - Answers - cause-and-effect modeling
What would be considered a lagging measure in a restaurant using the cause-and-
modeling method of data mining? - Answers - a satisfied customer
The accompanying spreadsheet shows the production model for the Blue Sunset Band
recording a new album. Which of the following formulas is used to calculate the total
studio recording cost? - Answers - =B6+B7*B12
The accompanying spreadsheet shows the production model for the Blue Sunset Band
recording a new album. Which of the following formulas is used to calculate the total in-
house recording cost? - Answers - =B10*B12
The total cost of reaching consumers (C) depends upon the number of consumers (N),
advertising costs (A), and transportation costs (T). The linear cost prediction model is
represented as
C=c−nN+aA+tT,
where c, n, a, and t are constants and c estimates the total cost when the remaining
variables are zero. Which of the following interpretations is true about this model? -
Answers - Change in variables N, A, and T will not reflect any changes in c.
Let TC be the total cost of manufacturing, let V be the unit variable cost, let F be the
fixed cost, and let Q be the quantity produced. Which of the following is the
mathematical model for deriving the total cost of manufacturing? - Answers -
TC=F+(V×Q)
ANSWERS
What is included in the data mining approach of data exploration and reduction? -
Answers - identfying groups in which the elements of the groups are in some ways
similar
What formula calculates the Euclidean distance between X and Y? - Answers - Square
Root (X1-Y1)^2+(X2-Y2)^2+...+(XN-YN)^2
What is true of cluster analysis? - Answers - It does not provide a definitive answer from
analyzing the data.
What is true of hierarchical clustering? - Answers - The data are not partitioned into a
particular cluster in a single step.
Determine if the statement is true or false.
In the average linkage clustering, the distance between two clusters is defined as the
average of distances between all pairs of objects, where each pair is made up of one
object from each group. - Answers - TRUE
In what method is the distance between groups defined as the distance between the
closest pair of objects, where only pairs consisting of one object from each group are
considered? - Answers - single linkage clustering
What is the distance between two clusters in a complete linkage clustering? - Answers -
the distance between the most distant pair of objects, one from each group
What is the first stage of joining clusters in agglomerative hierarchical clustering? -
Answers - Joining two clusters that are closest to each other
What is true of divisive clustering methods that makes them different from
agglomerative clustering methods? - Answers - They separate n objects successively
into finer groupings
What uses the sum of squares between the objects in the cluster when measuring their
distances? - Answers - Ward's hierarchical clustering
In a k-nearest neighbors algorithm, what is similarity of records based on? - Answers -
The closeness of a record to numerical predictors in the other records
, Spam filtering for emails can be seen as an example of what type of approach of data
mining? - Answers - classification
In classification, what would be considered as a categorical variable of interest for a
credit approval decision for a requester? - Answers - rejecting or accepting credit
approval
What data-mining method provides probabilistic if-then statements? - Answers -
association rule
Determine if the statement is true or false.
Lagging and leading measures in cause-and-effect modeling are uncorrelated. -
Answers - FALSE
In the cause-and-effect modeling, internal metrics, such as employee satisfaction,
productivity, and turnover are considered to be what kind of measures? - Answers -
leading
What data mining approach involves the developing of analytic models to describe the
relationship between metrics that drive business performance like profitability, customer
satisfaction, or employee satisfaction? - Answers - cause-and-effect modeling
What would be considered a lagging measure in a restaurant using the cause-and-
modeling method of data mining? - Answers - a satisfied customer
The accompanying spreadsheet shows the production model for the Blue Sunset Band
recording a new album. Which of the following formulas is used to calculate the total
studio recording cost? - Answers - =B6+B7*B12
The accompanying spreadsheet shows the production model for the Blue Sunset Band
recording a new album. Which of the following formulas is used to calculate the total in-
house recording cost? - Answers - =B10*B12
The total cost of reaching consumers (C) depends upon the number of consumers (N),
advertising costs (A), and transportation costs (T). The linear cost prediction model is
represented as
C=c−nN+aA+tT,
where c, n, a, and t are constants and c estimates the total cost when the remaining
variables are zero. Which of the following interpretations is true about this model? -
Answers - Change in variables N, A, and T will not reflect any changes in c.
Let TC be the total cost of manufacturing, let V be the unit variable cost, let F be the
fixed cost, and let Q be the quantity produced. Which of the following is the
mathematical model for deriving the total cost of manufacturing? - Answers -
TC=F+(V×Q)
