CompTIA DA0-001資格関連題、DA0-001テスト内容

DA0-001学習テストは、シラバスの変更と、CompTIA歴史的な質問や業界の動向に基づいた理論と実践の最新の進展に応じて、何百人もの専門家によって改訂された高品質の製品でした。あなたが学生であろうとオフィスワーカーであろうと、ルーキーであろうと長年の経験を積んだベテランであろうと、DA0-001ガイドトレントが最適です。 DA0-001学習教材の主な利点は、98％以上のCompTIA Data+ Certification Exam高い合格率であり、DA0-001試験に合格するには十分です。

CompTIA DA0-001の試験は、データ管理の概念やプラクティスをしっかり理解していることが求められる、難しい認定試験です。試験は80問の選択式問題から成り、90分以内に回答する必要があります。試験に合格するためには、最低でも900点中720点以上を取得する必要があります。試験は複数の言語で受験可能であり、オンラインまたはテストセンターで受験できます。CompTIAデータ認定を取得することは、就職市場で自己アピールをすることができ、収入やキャリアアップの機会を広げることができます。

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CompTIA DA0-001テスト内容、DA0-001認定試験トレーリング

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CompTIA DA0-001（CompTIA Data+認定）認定試験は、IT業界で高く評価されている認定試験です。この認定試験は、データと共に働くITプロフェッショナルのスキルと知識を検証するために設計されています。この認定試験は、データベース設計、データ分析、データセキュリティ、データウェアハウスなど、データ管理に関連する幅広いトピックをカバーしています。

CompTIA Data+ Certification Exam 認定 DA0-001 試験問題 (Q170-Q175):

質問 # 170
A data analyst was asked to create a chart that shows the relationship between study hours and exam scores for each student using the data sets in the table below:

Which of the following charts would BEST represent the relationship between the variables?

A. A scatter plot
B. A heat map
C. A bar chart
D. A histogram

正解：A

解説：
Explanation
This is because a scatter plot is a type of chart that shows the relationship between two variables for each observation or unit in a data set, such as study hours and exam scores for each student in this case. A scatter plot can be used to display and analyze the correlation, trend, or pattern among the variables, as well as identify any outliers or clusters in the data. For example, a scatter plot can show if there is a positive, negative, or no correlation between study hours and exam scores, as well as show if there are any students who have unusually high or low exam scores compared to their study hours. The other charts are not the best charts to represent the relationship between the variables. Here is why:
A histogram is a type of chart that shows the frequency or the count of values in a single variable for different intervals or bins, such as exam scores for different ranges in this case. A histogram can be used to display and analyze the distribution, shape, or spread of the variable, as well as identify any gaps, peaks, or skewness in the data. For example, a histogram can show if most students have high, low, or average exam scores, as well as show if there are any intervals that have no students at all.
A heat map is a type of chart that shows the intensity or the magnitude of values in two variables for different categories or groups, such as exam scores and study hours for different student names in this case. A heat map can be used to display and analyze the variation, contrast, or comparison among the categories or groups, as well as identify any hot spots, cold spots, or gradients in the data. For example, a heat map can show which students have higher or lower exam scores and study hours than others, as well as show if there is a color pattern that indicates a relationship between exam scores and study hours.
A bar chart is a type of chart that shows the value or the amount of a single variable for different categories or groups, such as exam scores for different student names in this case. A bar chart can be used to display and analyze the comparison, ranking, or proportion among the categories or groups, as well as identify any differences, similarities, or outliers in the data. For example, a bar chart can show which students have higher or lower exam scores than others, as well as show if there are any students who have exceptionally high or low exam scores.

質問 # 171
How many variables are normally shown on a standard heat map?

A. 0
B. 1
C. 2
D. 3

正解：A

質問 # 172
Which of the following is the best reason to use database views instead of tables?

A. Views reduce the need for repetitive, complex data joins.
B. Views can be used to restrict anonymous sensitive information.
C. Views allow for the joining of multiple data sources, whereas tables do not.
D. Views allow for the storage of temporary data, whereas tables do not.

正解：A

解説：
Comprehensive and Detailed In-Depth Explanation:
Database views are virtual tables that provide a specific representation of data from one or more tables. They are powerful tools for simplifying complex queries and enhancing data security.
Option A:Views reduce the need for repetitive, complex data joins.
* Rationale: Views can encapsulate complex JOIN operations and present the result as a single table. This abstraction allows users to retrieve the necessary data without repeatedly writing intricate SQL queries, promoting efficiency and reducing the potential for errors.

質問 # 173
A data set for sales per month includes the following data:

Which of the following cleaning and profiling methods should be applied to the data set?

A. Duplicate data
B. Data type validation
C. Invalid data
D. Data outliers

正解：C

質問 # 174
An analyst runs a report on a daily basis, and the number of datapoints must be validated before the data can be analyzed. The number of datapoints increases each day by approximately 20% of the total number from the day before. On a given day, the number of datapoints was 8,798. Which of the following should be the total number of datapoints on the next day?

A. 10,800
B. 7,038
C. 9,600
D. 10,600

正解：D

解説：
This is because the number of datapoints increases each day by approximately 20% of the total number from the day before. Therefore, to find the number of datapoints on the next day, we can use the formula:

Plugging in the given values, we get:

Since we are dealing with whole numbers, we can round up the result to the nearest integer, which is 10,600.

質問 # 175
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DA0-001テスト内容: https://jp.fast2test.com/DA0-001-premium-file.html