Online Access Free D-DS-FN-23 Practice Test

In naïve Bayes implementations, how is the possibility of zero probabilities resulting from unobserved attribute/classifier pairs properly handled?

• A.Square the observed counts
• B.Add a large quantity to each of the observed counts
• C.Add a small quantity to each of the observed counts
• D.Double the observed counts

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 (hat, scarf) => gloves?

• A.40%
• B.66%
• C.60%
• D.50%

Which analytic technique would be appropriate to estimate home sale price in U.S. dollars as a function of square footage, number of bedrooms, and lot size?

• A.Naive Bayesian classification
• B.Time series analysis
• C.Linear regression
• D.K-means clustering

An analyst is searching a corpus of documents for the topic "solid state disk". As shown in the graphic, Table A provides the inverse document frequency for each term across the corpus.
Table B provides each term's frequency in four documents selected from the corpus.

Based on the four documents, which document is most relevant to the analyst's search?

• A.Document A
• B.Document C
• C.Document D
• D.Document B

Which phase of the data analytic lifecycle includes conducting project sponsor interviews and drafting a problem statement?

• A.Operationalize
• B.Discovery
• C.Model planning
• D.Model building