Dell E20-007 Certification Practice Questions & Answers

Question 6 of 165

When creating a presentation for a technical audience, what is the main objective?

A.

Show that you met the project goals

B.

Show how you met the project goals

C.

Show if the model will meet the SLA

D.

Show the technique to be used in the production environment

Question 7 of 165

Your company has 3 different sales teams. Each team's sales manager has developed incentive offers to increase the size of each sales transaction. Any sales manager whose incentive program can be shown to increase the size of the average sales transaction will receive a bonus.
Data are available for the number and average sale amount for transactions offering one of the incentives as well as transactions offering no incentive.
The VP of Sales has asked you to determine analytically if any of the incentive programs has resulted in a demonstrable increase in the average sale amount.
Which analytical technique would be appropriate in this situation?

A.

One-way ANOVA

B.

Multi-way ANOVA

C.

Student's t-test

D.

Wilcoxson Rank Sum Test

Question 8 of 165

In data visualization, what is used to focus the audience on a key part of a chart?

A.

Emphasis colors

B.

Detailed text

C.

Pastel colors

D.

A data table

Question 9 of 165

Which word or phrase completes the statement? Data-ink ratio is to data visualization as __________ .

A.

Confusion matrix is to classifier

B.

Data scientist is to big data

C.

Seasonality is to ARIMA

D.

K-means is to Naive Bayes

Question 10 of 165

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%?

A.

{cheese} => {bread}

B.

{juice} => {cheese}

C.

{milk} => {soda}

D.

{soda} => {milk}