Practice Free D-DS-FN-23 Exam Online Questions
Refer to the Exhibit.
In the Exhibit, the table shows the values for the input Boolean attributes "A", "B", and "C". It also shows the values for the output attribute "class".
Which decision tree is valid for the data?
- A . Tree B
- B . Tree A
- C . Tree C
- D . Tree D
In association rules, given items X and Y, what does lift measure?
- A . Percentage of transactions that contain an itemset with X
- B . Percentage of transactions with Xthat also contain Y
- C . Difference in the probability ofX and Y appearing together compared with expectations as if they were statistically independent
- D . How many times more often X and Y occur together than expected if they were statistically independent, expressed as a ratio
Refer to the exhibit.
Click on the calculator icon in the upper left corner. You are going into a meeting where you know your manager will have a question on your dataset — specifically relating to customers that are classified as renters with good credit status.
In order to prepare for the meeting, you create a rule: RENTER => GOOD CREDIT.
What is the confidence of the rule?
- A . 63%
- B . 41%
- C . 18%
- D . 73%
Which data asset is an example of unstructured data?
- A . Database table
- B . Webserver log
- C . News article text
- D . XML data file
When is the GROUP BY ROLLUP clause used in an OLAP query?
- A . All subtotals and grand totals are to be included in the output
- B . Subtotals are only to be included in the output
- C . Grand totals are only to be included in the output
- D . Specific subtotals and grand totals for a combination of variables are only to be included in the output
Which word or phrase completes the statement? Structured data is to OLAP data as quasi- structured data is to
- A . Clickstream data
- B . XML data
- C . Text documents
- D . Image files
You have an automotive database containing numeric characteristics such as engine size, horsepower, and top speed.
Which technique could you use to group similar cars together?
- A . Naïve Bayes classifier
- B . Association rules
- C . K-means clustering
- D . Logistic regression
What is a recommended use case for regular expressions?
- A . Linear regression
- B . Decision trees
- C . Logistic regression
- D . In-database text analysis
You are testing two new weight-gain formulas for puppies. The test gives the results: Control group: 1% weight gain Formula A. 3% weight gain Formula B. 4% weight gain A one-way ANOVA returns a p-value = 0.027
What can you conclude?
- A . Either Formula A or Formula B is effective at promoting weight gain.
- B . Formula B is more effective at promoting weight gain than Formula A.
- C . Formula A and Formula B are both effective at promoting weight gain.
- D . Formula A and Formula B are about equally effective at promoting weight gain.
To ensure a successful analytic project, which key role can provide business domain expertise with a deep understanding of the data and key performance indicators?
- A . Business Intelligence Analyst
- B . Project Manager
- C . Project Sponsor
- D . Business User