DA0-001試験無料問題集（398題）「CompTIA Data+ Certification 認定」

出題：1

Which of the following is the best reason for removing data outliers?

A. Data varies significantly from others.

B. Data is missing from the table.

C. Data is duplicated in the whole range.

D. Data is redundant in the table.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：2

A data analyst needs to create a weekly recurring report on sales performance and distribute it to all sales managers. Which of the following would be the BEST method to automate and ensure successful delivery for this task?

A. Print out a copy.

B. Use scheduled report delivery.

C. Upload the report to the server.

D. Implement subscription access delivery.

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：3

Given the following tables:

Which of the following will be the dimensions from a FULL JOIN of the tables above?

A. Four rows and two columns

B. Two rows and three columns

C. Four rows and four columns

D. Three rows and four columns

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

Which of the following are the first steps a company should take after discovering a data breach? (Select two).

A. Delay reporting.

B. Issue a press release.

C. Back up the system.

D. Assess the breach.

E. Notify affected users.

F. Delete data.

正解：D,E 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：5

Which of the following value is the measure of dispersion "range" between the scores of ten students in a test.
The scores of ten students in a test are 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.

A. 90

B. 60

C. 80

D. 70

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

Which of the following is the first step an analyst should perform upon receiving a business request for analysis?

A. Review the business questions to understand the scope.

B. Initiate the analysis for exploratory data analysis.

C. Determine the data needs and sources for analysis.

D. Finalize the methodology to solve the problem.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：7

Andy is a pricing analyst for a retailer. Using a hypothesis test, he wants to assess whether people who receive electronic coupons spend more on average.
What should Andy's null hypothesis be?

A. People who receive electronic coupons spend more on average.

B. People who do not receive electronic coupons spend more on average.

C. People who receive electronic coupons do not spend more on average.

D. People who receive electronic coupons spend less on average.

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

A healthcare data analyst notices that one data set in the column for BloodPressure contains several outliers that need to be replaced with meaningful values. Which of the following data manipulation techniques should the analyst use?

A. Reduction

B. Recode

C. Impute

D. Append

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：9

An analyst is reporting on the average income for a county and is reviewing the following data:

Which of the following is the reason the analyst would need to cleanse the data in this data set?

A. Duplicate data

B. Missing values

C. Data completeness

D. Data outliers

正解：D 解答を投票する

出題：10

When analyzing the values of two variables, you decide to convert both variables so they are on a scale of 0 to
1.
What term describes this action?

A. Filtering.

B. Transposition.

C. Aggregation.

D. Normalization.

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：11

A data analyst is reviewing SQL code and sees a query that uses terms such as MIN, SUM, and COUNT.
Which of the following types of functions best describes these terms?

A. System

B. Aggregate

C. Filtering

D. Logical

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：12

Which of the following is an example of a discrete variable?

A. The number of people in an office

B. The time to complete a task

C. The height of a horse

D. The temperature of a hot tub

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：13

A research analyst wants to determine whether the data being analyzed is connected to other datapoints.
Which of the following is the BEST type of analysis to conduct?

A. Exploratory analysis

B. Performance analysis

C. Trend analysis

D. Link analysis

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：14

You have two databases tables that you would like to join together using a foreign key relationship.
What term best describes this action?

A. Mixing.

B. Merging.

C. Appending.

D. Blending.

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

DA0-001試験無料問題集「CompTIA Data+ Certification 認定」