Free D-DS-FN-23 Questions for EMC Dell Data Science Foundations D-DS-FN-23 Exam as PDF & Practice Test Engine

Which process in text analysis can be used to reduce dimensionality?

What is a benefit of Spark in-memory data processing as opposed to using MapReduce?

Consider the example of an analysis for fraud detection on credit card usage. You will need to ensure higher-risk transactions that may indicate fraudulent credit card activity are retained in your data for analysis, and not dropped as outliers during pre-processing.
What will be your approach for loading data into the analytical sandbox for this analysis?

You are performing a market basket analysis using the Apriori algorithm.
Which measure is a ratio describing the how many more times two items are present together than would be expected if those two items are statistically independent?

In text analysis, what makes the corpus representation dynamic?

Consider a database with 4 transactions:
Transaction 1: {cheese, bread, milk}
Transaction 2: {soda, bread, milk}
Transaction 3: {cheese, bread}
Transaction 4: {cheese, soda, juice}
You decide to run the association rules algorithm where minimum support is 50%.
Which rule has a confidence at least 50%?

Which component of a final presentation provides a succinct overview of the business situation that was the impetus to initiate the project?

Refer to the Exhibit.

In the Exhibit. For effective visualization, what is the chart's primary flaw?

What does "MAD" in MADlib stand for?

In a Student's t-test, what is the meaning of the p-value?

What action occurs during feature selection in the model building phase of the data analytics lifecycle?

What is a motivation for using a data analytics lifecycle?