E20-007 試験問題を無料オンラインアクセス

Refer to the Exhibit.

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

• A.The order of the columns.
• B.The use of 3 dimensions.
• C.The slanting of axis labels.
• D.The location of the legend.

In which phase of the data analytics lifecycle do Data Scientists spend the most time in a project?

• A.Discovery
• B.Communicate Results
• C.Data Preparation
• D.Model Building

Refer to the exhibit.

You have run a linear regression model against your data, and have plotted true outcome versus predicted outcome. The R-squared of your model is 0.75. What is your assessment of the model?

• A.The observations seem to come from two different populations,but this model fits them both equally well.
• B.The R-squared is good. The model should perform well.
• C.The R-squared may be biased upwards by the extreme-valued outcomes. Remove them and refit to get a better idea of the model's quality over typical data.
• D.The extreme-valued outliers may negatively affect the model's performance. Remove them to see if the R-squared improves over typical data.

Which word or phrase completes the statement? A data warehouse is to a centralized database for reporting as an analytic sandbox is to a _______?

• A.Collection of data assets for ETL
• B.Centralized database of KPIs
• C.Collection of data assets for modeling
• D.Collection of low-volume databases

What is the purpose of the process step "parsing" in text analysis?

• A.executes the clustering and classification to organize the contents
• B.computes the TF-IDF values for all keywords and indices
• C.imposes a structure on the unstructured/semi-structured text for downstream analysis
• D.performs the search and/or retrieval in finding a specific topic or an entity in a document