E20-007 무료 덤프문제 온라인 액세스

You are provided four different datasets. Initial analysis on these datasets show that they have identical mean, variance and correlation values. What should your next step in the analysis be?

• A.Visualize the data to further explore the characteristics of each data set
• B.Select one of the four datasets and begin planning and building a model
• C.Combine the data from all four of the datasets and begin planning and bulding a model
• D.Recalculate the descriptive statistics since they are unlikely to be identical for each dataset

Which word or phrase completes the statement? A Data Scientist would consider that a RDBMS is to a Table as R is to a ______________ .

• A.Data frame
• B.Array
• C.Matrix
• D.List

What describes the use of UNION clause in a SQL statement?

• A.Operates on queries and potentially decreases the number of rows
• B.Operates on both tables and queries and potentially increases both the number of rows and columns
• C.Operates on tables and potentially decreases the number of columns
• D.Operates on queries and potentially increases the number of rows

You are attempting to find the Euclidean distance between two centroids:
Centroid A's coordinates: (X = 2, Y = 4)
Centroid B's coordinates (X = 8, Y = 10)
Which formula finds the correct Euclidean distance?

• A.SQRT(((2-8) x 2) + ((4-10) x 2)) or 12.17
• B.SQRT((2-8)2+(4-10)2) or 8.49
• C.((2-8)2+(4-10)2) or 72
• D.((2-8) x 2 + (4-10) x 2) or 148

What is required in a presentation for business analysts?

• A.Detailed statistical explanation of the applicable modeling theory
• B.The presentation author's credentials
• C.Budgetary considerations and requests
• D.Operational process changes