CompTIA DA0-001試験復習赤本 & DA0-001最新対策問題

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CompTIA DA0-001 認定試験の出題範囲：

トピック	出題範囲
トピック 1	Data Analysis: Here, the focus is on applying descriptive statistical methods to analyze data in scenarios, understanding inferential statistical methods, and exploring different types of analysis techniques along with tools commonly used in data analytics.
トピック 2	Visualization: This topic explores translating business requirements into report formats, designing effective reports and dashboards using appropriate components, methods for dashboard development, and selecting suitable visualization types.
トピック 3	Data Governance, Quality, and Controls: It covers essential concepts of data governance, applying data quality control techniques in scenarios, and understanding master data management (MDM) principles.
トピック 4	Data Mining: In this topic, you'll learn about data acquisition, the importance of data cleansing and profiling, techniques for data manipulation and query optimization to prepare data for analysis.
トピック 5	Data Concepts and Environments: This topic covers fundamental concepts related to data schemas, dimensions, and data types, along with a comparison of common data structures and file formats.

Comptia DA0-001認定は、データ管理の分野の専門家にとって貴重な資格です。安全で効率的でスケーラブルな方法でデータを操作するために必要なスキルと知識を検証します。 DA0-001試験に合格することにより、候補者はキャリアの見通しを強化し、現代のビジネスのこの重要な分野での専門知識を実証することができます。

>> CompTIA DA0-001試験復習赤本 <<

DA0-001最新対策問題、DA0-001関連試験

尊敬され、高い社会的地位を獲得することは、おそらくあなたが常に望んでいることです。しかし、それを達成したい場合は、特定の分野で優れた能力と深い知識を所有する必要があります。 DA0-001認定に合格すると、それが証明され、目標を実現するのに役立ちます。DA0-001クイズ準備を購入すると、DA0-001試験に合格できます。当社の製品は専門家によって編集され、長年の経験を持つ専門家によって承認されています。JPTestKing購入前に、最新のDA0-001クイズトレントを無料でダウンロードして試用できます。

CompTIA Data+ Certification Exam 認定 DA0-001 試験問題 (Q350-Q355):

質問 # 350
A cereal manufacturer wants to determine whether the sugar content of its cereal has increased over the years. Which of the following is the appropriate descriptive statistic to use?

A. Frequency
B. Percent change
C. Variance
D. Mean

正解：B

質問 # 351
A data analyst needs to present the results of an online marketing campaign to the marketing manager. The manager wants to see the most important KPIs and measure the return on marketing investment. Which of the following should the data analyst use to BEST communicate this information to the manager?

A. A sell-service dashboard that allows the manager to look at the company's annual budget performance
B. A spreadsheet of the raw data from all marketing campaigns and channels
C. A summary with statistics, conclusions, and recommendations from the data analyst
D. A real-time monitor that allows the manager to view performance the day the campaign was launched

正解：C

質問 # 352
Which of the following are reasons to create and maintain a data dictionary? (Choose two.)

A. To confine breaches of PHI data
B. To provide continuity through personnel turnover
C. To remember specifics about data fields
D. To reduce processing power requirements
E. To specify user groups for databases
F. To improve data acquisition

正解：B、C

解説：
Explanation
A data dictionary is a collection of metadata that describes the data elements in a database or dataset. It can help improve data acquisition by providing information about the data sources, formats, quality, and usage. It can also help remember specifics about data fields, such as their names, definitions, types, sizes, and relationships. Therefore, options B and D are correct.
Option A is incorrect because it is not a reason to create and maintain a data dictionary, but a benefit of doing so.
Option C is incorrect because specifying user groups for databases is not a function of a data dictionary, but a function of a database management system or a security policy.
Option E is incorrect because confining breaches of PHI data is not a function of a data dictionary, but a function of a data protection or encryption system.
Option F is incorrect because reducing processing power requirements is not a function of a data dictionary, but a function of a data compression or optimization system.

質問 # 353
An analyst is preparing a report that contains weather data. The temperatures are shown in Fahrenheit. but they must be reported in Celsius. Which of the following should the analyst do to fix this issue?

A. Normalize the data.
B. Aggregate the data.
C. Rescale the data.
D. Standardize the data.

正解：C

解説：
The analyst should rescale the data to fix this issue. Rescaling is a process of transforming data from one scale to another, such as changing the units of measurement. In this case, the analyst needs to rescale the temperatures from Fahrenheit to Celsius, which are two different scales for measuring temperature. To do this, the analyst can use the following formula:
Celsius = (Fahrenheit - 32) * 5/9
This formula converts each temperature value from Fahrenheit to Celsius by subtracting 32 and multiplying by 5/9. For example, if the temperature is 68°F, the rescaled value in Celsius is:
Celsius = (68 - 32) * 5/9 Celsius = 20°C
Rescaling the data can help the analyst to report the temperatures in a consistent and accurate way, and to avoid any confusion or errors that may arise from using different scales. Rescaling can also make the data more comparable and compatible with other data sources or standards that use the same scale12.

質問 # 354
An analyst has received the requirements for an internal user dashboard. The analyst confirms the data sources and then creates a wireframe. Which of the following is the NEXT step the analyst should take in the dashboard creation process?

A. Deploy to production.
B. Optimize the dashboard.
C. Get stakeholder approval.
D. Create subscriptions.

正解：C

解説：
Explanation
Getting stakeholder approval is the next step the analyst should take in the dashboard creation process, after confirming the data sources and creating a wireframe. Stakeholder approval means getting feedback and validation from the intended users or clients of the dashboard, to ensure that it meets their expectations and requirements. This step helps to avoid rework and ensure customer satisfaction. References: CompTIA Data+ Certification Exam Objectives, page 14

質問 # 355
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CompTIA DA0-001試験復習赤本 & DA0-001最新対策問題

CompTIA DA0-001 認定試験の出題範囲：

DA0-001最新対策問題、DA0-001関連試験

CompTIA Data+ Certification Exam 認定 DA0-001 試験問題 (Q350-Q355):

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