Exam (elaborations)
Advanced Business Analytics DSA 8590 Questions and Answers
- Course
- Institution
Advanced Business Analytics DSA 8590
[Show more]
Content preview
Advanced Business Analytics DSA 8590Which type of chart would you use to visualize the relationship between two variables?
a) Histogram
b) Scatterplot
c)Box plot
d)Scatterplot Matrix - answerb)Correct! Scatterplot
Which of the following would NOT fall under business analytics?
a)analyzing data
b)collecting data
c)interpreting information
d)acting on information - answerd)Correct! acting on information
Employees' gender is stored in the form of F or M in the payroll data, but is stored in the
form of Female or Male in human resource data. These different ways to store the same
value lead to ____ in data?
a)Noise
b)Incompleteness
c)Error
d)Inconsistency - answerd)Correct! Inconsistency
Which type of chart would you use to visualize the comparison on a single variable
across several groups.?
a)Scatterplot Matrix
b)Correct Answer Box Plot
c) Histogram
d)Scatterplot - answerb)Correct Answer Box Plot
Which type of chart would you use to visualize the distribution of a single variable?
a)Scatterplot
b)Scatterplot Matrix
c)Box Plot
d)Histogram - answerc)Correct! Box Plot
Which of the following statement is correct?
-Lift is used to measure how likely two item sets co-occur by pure chance
-Conf(X->Y) may equal to Conf(Y->X)
-With 5 items, there will be 16 potential item sets
-Confidence is needed to calculate support - answerConf(X->Y) may equal to Conf(Y-
>X)
, Here is a dataset of 6 transactions.
Transaction No.Items Purchased
1: Juice, Bread, Butter, Ice Cream
2:Cereal, Juice, Milk
3:Bread, Cereal, Ice Cream, Milk
4: Bread, Butter, Cereal, Cheese, Juice
5: Bread, Ice Cream, Juice
6:Bread, Cheese, Juice, Milk
a) What is the support percentage of the association rule {Ice Cream} -> {Juice}?
(Rounding to one decimal place)
b) What is the confidence of the association rule {Ice Cream} -> {Juice}? (Rounding to
one decimal place)
c) What is the Lift of the association rule {Ice Cream} -> {Juice}? (Rounding to one
decimal place) - answera)0.3
b)0.7
c)0.8
Which of the following statements about clustering analysis is NOT correct?
-Clustering analysis organizes data points/objects into homogeneous and pre-defined
groups
-We want clustering results to have high intra-similarity
-We want clustering results to have low inter-similarity
-Clustering analysis is a type of exploratory data analytics as clusters come from data -
answerClustering analysis organizes data points/objects into homogeneous and pre-
defined groups
If your data is numeric, which of the following distance metrics is NOT applicable?
-Matching Distance
-Euclidean Distance
-Manhattan Distance
-Max-Coordinate Distance - answerMatching Distance
Suppose you apply hierarchical clustering on 7 data points {A, B, C, D, E, F, G} and
obtain the following dendrogram.
Based on the 3-cluster solution, which of the following statements about the
dendrogram is correct?
-E, F, and G belong to the same cluster
-A, B, C, and D belong to the same cluster
-C, D and E belong to the same cluster
-C, F and G belong to the same cluster - answerE, F, and G belong to the same cluster
Consider the following dataset, which shows the results of 4 medical tests done for 3
different patients (1 - positive test result, 0 - negative test result). What is the Jaccard
Distance between A and C? (Rounding to one decimal place)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Dreamer252. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77764 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now