Online Access Free E20-007 Exam Questions

Refer to the exhibit.

In the exhibit, a correlogram is provided based on an autocorrelation analysis of a sample dataset.
What can you conclude from only this exhibit?

• A.Lag 7 has a significant negative autocorrelation
• B.There is no structure left to model in the data
• C.There is significant autocorrelation through lag 3
• D.Differencing is required before proceeding with any analysis

Review the following code:
SELECT pn, vn, sum(prc*qty)
FROM sale
GROUP BY CUBE(pn, vn)
ORDER BY 1, 2, 3;
Which combination of subtotals do you expect to be returned by the query?

• A.( (pn,vn),(pn),(vn),( ) )
• B.( (pn,vn),(pn) )
• C.( (pn,vn),(pn),(vn) )
• D.(pn,vn)

Consider these itemsets: (hat, scarf, coat)
(hat, scarf, coat, gloves)
(hat, scarf, gloves)
(hat, gloves)
(scarf, coat, gloves)
What is the confidence of the rule (gloves -> hat)?

• A.80%
• B.66%
• C.60%
• D.75%

Your customer provided you with 2, 000 unlabeled records and asked you to separate them into three groups. What is the correct analytical method to use?

• A.Linear regression
• B.K-means clustering
• C.Logistic regression
• D.Naive Bayesian classification

What is the primary bottleneck in text classification?

• A.The fact that text corpora are dynamic.
• B.The ability to parse unstructured text data.
• C.The high dimensionality of text data.
• D.The availablilty of tagged training data.