Knowledge quiz

It's time to put what you've learned to the test, get 8 right to pass this week.

Which statements regarding association rules are true?

There are two correct answers.

The lift of a rule is symmetric.

The support of a rule is symmetric.

The confidence of a rule is symmetric.

Any rule with a lift greater than 1 does not indicate a real cross-selling opportunity.

Which parameter settings can influence a cluster model?

There are three correct answers.

The number of clusters to be created

The choice of distance measure

The support

The lift

The initial choice of cluster centers

In which task of the Modeling phase of the cross-industry standard process for data mining (CRISP-DM) methodology do you describe the plan for training, testing, and evaluating the models?

Choose the correct answer.

Select modeling technique

Generate test design

Build model

Assess model

What do you try to achieve when building a robust model?

Choose the correct answer.

No training error with high-test error

High training error with low-test error

Low training error with low-test error

Low training error with high-test error

What does a Silhouette value of -1 indicate?

Choose the correct answer.

There is an error, as Silhouette is measured between 0 and +1.

All records are located on the cluster centers of some other cluster.

On average, the records are equidistant between their own cluster center and the next nearest cluster center.

All records are located directly on their cluster centers.

How do you calculate the interquartile range value?

Choose the correct answer.

Q3-Q1

Q4-Q2

Q2-Q1

Q4-Q1

What does a coefficient of determination (R2) value of 0.4 indicate?

Choose the correct answer.

40 percent of the variance in Y (the target) is predictable from X (the explanatory variables).

60 percent of the variance in Y (the target) is predictable from X (the explanatory variables).

60 percent of the variance in X (the explanatory variables) is predictable from Y (the target).

40 percent of the variance in X (the explanatory variables) is predictable from Y (the target).

What would be the confidence of the rule {Product A} => {Product B}, if the total number of baskets analyzed is 300, when 100 customers purchased Product A, 60 customers purchases product B, and 20 customers purchased both product A and B?

Choose the correct answer.

20.00%

166.67%

60.00%

6.67%

10.

Knowledge quiz

Which statements regarding association rules are true?

Which parameter settings can influence a cluster model?

In which task of the Modeling phase of the cross-industry standard process for data mining (CRISP-DM) methodology do you describe the plan for training, testing, and evaluating the models?

What do you try to achieve when building a robust model?

Which types of analysis can be heavily biased by outliers?

What does a Silhouette value of -1 indicate?

How do you calculate the interquartile range value?

What does a coefficient of determination (R2) value of 0.4 indicate?

What would be the confidence of the rule {Product A} => {Product B}, if the total number of baskets analyzed is 300, when 100 customers purchased Product A, 60 customers purchases product B, and 20 customers purchased both product A and B?

Which outputs are generated in the Modeling phase of the cross-industry standard process for data mining (CRISP-DM) methodology?