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CompTIA Certification
DA0-001 Exam
CompTIA.DA0-001.v2024-11-18.q219 Dumps

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Question 156

An analyst is building a new dashboard for a user. After an initial conversation with the user. the analyst created a mock-up of the dashboard. Which of the following best explains why the analyst created the mock-up?

A.To identify the dimensions and measures
B.To send to the client after deploying the dashboard to production
C.To confirm important details before dashboard development begins
D.To receive client approval for the final dashboard design

Correct Answer: C

Answer C) To confirm important details before dashboard development begins.
A dashboard mockup is a prototype of a finished dashboard directly in the product. It is a way to visualize the layout, design, and functionality of the dashboard before it is built with real data and code. A dashboard mockup can help the analyst to confirm important details with the user, such as the business objectives, the key performance indicators, the data sources, the filters, the charts, and the interactivity. By creating a dashboard mockup, the analyst can get immediate feedback and validation from the user, and avoid wasting time and resources on developing a dashboard that does not meet the user's expectations or needs1.

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Question 157

A data analyst must separate the column shown below into multiple columns for each component of the name:

Which of the following data manipulation techniques should the analyst perform?

A.Imputing
B.Transposing
C.Parsing
D.Concatenating

Correct Answer: C

Parsing is the data manipulation technique that should be used to separate the column into multiple columns for each component of the name. Parsing is the process of breaking down a string of text into smaller units, such as words, symbols, or numbers. Parsing can be used to extract specific information from a text column, such as names, addresses, phone numbers, etc. Parsing can also be used to split a text column into multiple columns based on a delimiter, such as a comma, space, or dash1. In this case, the analyst can use parsing to split the column by the comma delimiter and create three new columns: one for the last name, one for the first name, and one for the middle initial. This will make the data more organized and easier to analyze.

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Question 158

The number of phone calls that the call center receives in a day is an example of:

A.continuous data.
B.categorical data.
C.ordinal data.
D.discrete data.

Correct Answer: D

Explanation
Discrete data is a type of data that can only take certain values, usually whole numbers or integers. Discrete data can be counted, but not measured. For example, the number of students in a class, the number of books in a library, or the number of phone calls that a call center receives in a day are all examples of discrete data.
Discrete data is different from continuous data, which can take any value within a range, and can be measured with precision. For example, the height of a person, the weight of a fruit, or the temperature of a room are all examples of continuous data. Therefore, the correct answer is D. References: [Discrete vs Continuous Data:
Definition and Examples - Statistics How To], [Discrete Data - Definition and Examples | Math Goodies]

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Question 159

Given the information in the following tables:

Which of the following describes merging these tables to create a master file that includes all transactions for both online and in-store sales?

A.Data audit
B.Data consolidation
C.Data validation
D.Data completeness

Correct Answer: B

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Question 160

Which one the following is not considered an aggregate function?

A.SUM
B.MIN
C.SELECT
D.MAX

Correct Answer: C

The option that is not considered an aggregate function is SELECT. An aggregate function is a function that performs a calculation on a set of values and returns a single value. Examples of aggregate functions are SUM, MIN, MAX, AVG, COUNT, etc. SELECT is not an aggregate function, but a SQL command that is used to select data from a table or a query. Reference: SQL Aggregate Functions - W3Schools

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