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[General] Get Real CompTIA DA0-001 Exam Questions By [TestValid]

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【General】 Get Real CompTIA DA0-001 Exam Questions By [TestValid]

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CompTIA Data+ Certification Exam Sample Questions (Q66-Q71):NEW QUESTION # 66
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. Data type validation
  • B. Duplicate data
  • C. Invalid data
  • D. Data outliers
Answer: C

NEW QUESTION # 67
Which of the following is the best description of the term "data governance"?
  • A. Data governance is the process of analyzing, manipulating, and reporting data in an organization.
  • B. Data governance governs the development of a data visualization dashboard in an organization.
  • C. Data governance is the availability, usability, integrity, and security of data in an enterprise.
  • D. Data governance is the policy that protects against data breaches by cybercriminals.
Answer: C

NEW QUESTION # 68
A customer survey reveals 90% positive feedback. Which of the following statistical methods would be best to utilize to determine the reliability of a data set and predict how a larger sample of customers over the same time period might respond?
  • A. Calculate the maximum range of the survey responses.
  • B. Calculate a high variance on survey responses.
  • C. Remove any data more than 4 standard deviation from the mean.
  • D. Calculate a low standard deviation on survey responses.
Answer: D

NEW QUESTION # 69
Given the below:

Which of the following numbers represents a Type I error?
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Answer: B

NEW QUESTION # 70
Which of the following data manipulation techniques is an example of a logical function?
  • A. AGGREGATE
  • B. IF
  • C. BOOLEAN
  • D. WHERE
Answer: B
Explanation:
This is because an IF function is a type of logical function that returns a value based on a condition or a set of conditions. An IF function can be used to manipulate data by applying different actions or calculations depending on whether the condition is true or false. For example, an IF function in Excel that can achieve this is:
=IF (condition, value_if_true, value_if_false)
The other data manipulation techniques are not examples of logical functions. Here is why:
WHERE is a type of clause that filters data based on a condition or a set of conditions. A WHERE clause can be used to manipulate data by selecting only the rows that satisfy the condition(s). For example, a WHERE clause in SQL that can achieve this is:

AGGREGATE is a type of function that performs a calculation on a group of values, such as sum, average, count, etc. An AGGREGATE function can be used to manipulate data by summarizing or aggregating the values in a column or a table. For example, an AGGREGATE function in SQL that can achieve this is:

BOOLEAN is a type of data type that represents two possible values: true or false. A BOOLEAN data type can be used to manipulate data by storing or returning logical values based on a condition or a set of conditions. For example, a BOOLEAN data type in Python that can achieve this is:


NEW QUESTION # 71
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