Online Access Free D-DS-FN-23 Exam Questions

The graphic shows the values for the input Boolean attributes "A", "B", and "C". In addition, the graphic shows the values for the output attribute "class".

Which Decision Tree is valid for the data?

• A.Tree A
• B.Tree B
• C.Tree D
• D.Tree C

In hypothesis testing, when does a Type I error occur?

• A.Null hypothesis is rejected when it is actually false
• B.Null hypothesis is rejected when it is actually true
• C.Null hypothesis is accepted when it is actually true
• D.Null hypothesis is accepted when it is actually false

In addition to quantitative and technical skills, what is a key aspect of the profile of a data scientist?

• A.Project management and administrative skills
• B.Accounting and regulatory skills
• C.Curious and creative
• D.Proficient in Microsoft Project and Excel

Which of the following is an example of quasi-structured data?

• A.OLAP
• B.Customer record table
• C.OLTP
• D.Clickstream data

You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions.
You have tested all the theoretical models in the previous model planning stage, and all tests have yielded statistically insignificant results.
What is your next step?

• A.Modify samples used by the models and iterate until a significant result occurs.
• B.Report that the results are insignificant, and reevaluate the original business question.
• C.Move forward on the model with the highest significance scores relative to the others.
• D.Run all the models again against a larger sample, leveraging more historical data.