Deck 17: Data Mining

ملء الشاشة (f)
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سؤال
The predicted value from a logistic regression will be:

A) between 0 and 1
B) between -1 and 1
C) less than 0
D) greater than 1
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لقلب البطاقة.
سؤال
Segmentation is also known as clustering, and involves trying to group entities into similar clusters.
سؤال
Clustering is considered a supervised data mining technique.
سؤال
Megan is examining the likelihood of people riding the subway. The dependent variable takes on the value of 1 if the individual rides the subway and 0 otherwise. Therefore, she could use logistic regression to examine this question.
سؤال
A facts table has:

A) few rows and many columns
B) many rows and many columns
C) many rows and few columns
D) few rows and few columns
سؤال
Melody is a department store manager and wants to examine whether or not female shoppers are more likely than male shoppers to use a department credit card. "Female = 1" indicates the individual is a female. "Credit Card = 1" indicates the individual used a credit card to make the purchase. "Amount spent" is in dollars. Create a pivot table that illustrates something meaningful about the variables in the accompanying table. What does the pivot table indicate about spending habits?
سؤال
The magnitude of the betas in a logistic regression cannot necessarily be used to determine which variables are the "most important." Explain.
سؤال
If the regression coefficient estimate from a logistic regression is positive, the probability of the dependent variable taking on a value of 1:

A) decreases
B) approaches zero
C) increases
D) remains constant
سؤال
Melody is a department store manager and wants to examine whether or not female shoppers are more likely than male shoppers to use a department credit card. "Female = 1" indicates the individual is a female. "Credit Card = 1" indicates the individual used a credit card to make the purchase. "Amount spent" is in dollars. Melody runs a logistic regression. If the estimate on the female variable is positive, what does this indicate about credit card usage?
سؤال
The higher the "score" for a particular member in logistic regression, the:

A) higher the likelihood that member is in category 1
B) lower the likelihood that member is in category 1
C) higher the likelihood that member is in category 0
D) higher the likelihood that member is not in a category
سؤال
Data mining is used to examine known, expected patterns and relationships among variables.
سؤال
The testing set in data partitioning is the:

A) first subset of data, which usually contains 70% of the records
B) second subset of data, which usually contains 30% or less of the records
C) initial dataset from which subsets are created
D) first subset of data, which usually contains 30% of the records
سؤال
Which methodology is used to group products that customers purchase together?

A) market basket analysis
B) prediction
C) classification analysis
D) forecasting
سؤال
Suppose the odds of Team A winning are 5 to 1. Then, the odds ratio is:

A) 5/1
B) 1/5
C) 6/1
D) 1/6
سؤال
A data mart is typically smaller than a data warehouse.
سؤال
Bridget has partitioned data into two subsets. The original file contains 300,000 observations. The subset she is currently working with has 60,000 observations. Which subset is she most likely to be using?

A) the training set
B) the original set
C) the testing set
D) the prediction set
سؤال
Melody is a department store manager and wants to examine whether or not female shoppers are more likely than male shoppers to use a department credit card. "Female = 1" indicates the individual is a female. "Credit Card = 1" indicates the individual used a credit card to make the purchase. "Amount spent" is in dollars. Which variables would be the dependent and independent variables in Melody's model?
سؤال
Mya is investigating the factors that impact soda consumption. She examines a host of variables that help explain the amount consumed. Which type of data mining methodology is she most likely to use?

A) market basket analysis
B) prediction
C) classification analysis
D) forecasting
سؤال
In a facts table, a supermarket database is likely to have which item listed in rows?

A) the number of units sold
B) the revenue generated from a particular unit
C) the department in which the unit was purchased
D) the individual items purchased
سؤال
  Create a pivot table that illustrates something meaningful about the variables in the accompanying table.<div style=padding-top: 35px>
Create a pivot table that illustrates something meaningful about the variables in the accompanying table.
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ملء الشاشة (f)
exit full mode
Deck 17: Data Mining
1
The predicted value from a logistic regression will be:

A) between 0 and 1
B) between -1 and 1
C) less than 0
D) greater than 1
between 0 and 1
2
Segmentation is also known as clustering, and involves trying to group entities into similar clusters.
True
3
Clustering is considered a supervised data mining technique.
False
4
Megan is examining the likelihood of people riding the subway. The dependent variable takes on the value of 1 if the individual rides the subway and 0 otherwise. Therefore, she could use logistic regression to examine this question.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
5
A facts table has:

A) few rows and many columns
B) many rows and many columns
C) many rows and few columns
D) few rows and few columns
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
6
Melody is a department store manager and wants to examine whether or not female shoppers are more likely than male shoppers to use a department credit card. "Female = 1" indicates the individual is a female. "Credit Card = 1" indicates the individual used a credit card to make the purchase. "Amount spent" is in dollars. Create a pivot table that illustrates something meaningful about the variables in the accompanying table. What does the pivot table indicate about spending habits?
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
7
The magnitude of the betas in a logistic regression cannot necessarily be used to determine which variables are the "most important." Explain.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
8
If the regression coefficient estimate from a logistic regression is positive, the probability of the dependent variable taking on a value of 1:

A) decreases
B) approaches zero
C) increases
D) remains constant
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
9
Melody is a department store manager and wants to examine whether or not female shoppers are more likely than male shoppers to use a department credit card. "Female = 1" indicates the individual is a female. "Credit Card = 1" indicates the individual used a credit card to make the purchase. "Amount spent" is in dollars. Melody runs a logistic regression. If the estimate on the female variable is positive, what does this indicate about credit card usage?
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
10
The higher the "score" for a particular member in logistic regression, the:

A) higher the likelihood that member is in category 1
B) lower the likelihood that member is in category 1
C) higher the likelihood that member is in category 0
D) higher the likelihood that member is not in a category
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
11
Data mining is used to examine known, expected patterns and relationships among variables.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
12
The testing set in data partitioning is the:

A) first subset of data, which usually contains 70% of the records
B) second subset of data, which usually contains 30% or less of the records
C) initial dataset from which subsets are created
D) first subset of data, which usually contains 30% of the records
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
13
Which methodology is used to group products that customers purchase together?

A) market basket analysis
B) prediction
C) classification analysis
D) forecasting
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
14
Suppose the odds of Team A winning are 5 to 1. Then, the odds ratio is:

A) 5/1
B) 1/5
C) 6/1
D) 1/6
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
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k this deck
15
A data mart is typically smaller than a data warehouse.
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افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
16
Bridget has partitioned data into two subsets. The original file contains 300,000 observations. The subset she is currently working with has 60,000 observations. Which subset is she most likely to be using?

A) the training set
B) the original set
C) the testing set
D) the prediction set
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
17
Melody is a department store manager and wants to examine whether or not female shoppers are more likely than male shoppers to use a department credit card. "Female = 1" indicates the individual is a female. "Credit Card = 1" indicates the individual used a credit card to make the purchase. "Amount spent" is in dollars. Which variables would be the dependent and independent variables in Melody's model?
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
18
Mya is investigating the factors that impact soda consumption. She examines a host of variables that help explain the amount consumed. Which type of data mining methodology is she most likely to use?

A) market basket analysis
B) prediction
C) classification analysis
D) forecasting
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
19
In a facts table, a supermarket database is likely to have which item listed in rows?

A) the number of units sold
B) the revenue generated from a particular unit
C) the department in which the unit was purchased
D) the individual items purchased
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
20
  Create a pivot table that illustrates something meaningful about the variables in the accompanying table.
Create a pivot table that illustrates something meaningful about the variables in the accompanying table.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.
فتح الحزمة
k this deck
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فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 20 في هذه المجموعة.