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CompTIA DA0-001 Exam Practice Questions (P. 4)

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Question #31
An analyst has generated a report that includes the number of months in the first two quarters of 2019 when sales exceeded $50,000:

Which of the following functions did the analyst use to generate the data in the Sales_indicator column?
  1. A
    Aggregate
  2. B
    Logical
  3. C
    Date
  4. D
    Sort

Correct Answer:
D

Question #32
While reviewing survey data, an analyst notices respondents entered “Jan,” “January,” and “01” as responses for the month of January. Which of the following steps should be taken to ensure data consistency?
  1. A
    Delete any of the responses that do not have “January” written out.
  2. B
    Replace any of the responses that have “01”.
  3. C
    Filter on any of the responses that do not say “January” and update them to “January”.
  4. D
    Sort any of the responses that say “Jan” and update them to “01”.

Correct Answer:
C

Question #33
Which of the following data cleansing issues will be fixed when a DISTINCT function is applied?
  1. A
    Missing data
  2. B
    Duplicate data
  3. C
    Redundant data
  4. D
    Invalid data

Correct Answer:
B

Question #34
A county in Illinois is conducting a survey to determine the mean annual income per household. The county is 427sq mi (2.65q km). Which of the following sampling methods would MOST likely result in a representative sample?
  1. A
    A stratified phone survey of 100 people that is conducted between 2:00 p.m. and 3:00 p.m.
  2. B
    A systematic survey that is sent to 100 single-family homes in the county
  3. C
    Surveys sent to ten randomly selected homes within 5mi (8km) of the county’s office
  4. D
    Surveys sent to 100 randomly selected homes that are reflective of the population

Correct Answer:
D

Question #35
Which of the following statistical methods requires two or more categorical variables?
  1. A
    Simple linear regression
  2. B
    Chi-squared test
  3. C
    Z-test
  4. D
    Two-sample t-test

Correct Answer:
B

Question #36
Which of the following data manipulation techniques is an example of a logical function?
  1. A
    WHERE
  2. B
    AGGREGATE
  3. C
    BOOLEAN
  4. D
    IF

Correct Answer:
C

Question #37
A sales team wants visibility of current sales numbers, pipeline, and team performance. The team would also like to see calculations of individuals’ earned commissions and projected commissions based on sales, but they want that information to be kept confidential. Which of the following would be the BEST way to provide this visibility?
  1. A
    Create a dashboard displaying a data refresh date so users know the current sales numbers and configure permissions to control access.
  2. B
    Create a dashboard for sales numbers, pipeline, and team and individual performance for the management team.
  3. C
    Create a dashboard with filters for the overall team, individuals, and management. Users can filter to see the data they want.
  4. D
    Create a dashboard with views for team, individuals, and management. Configure permissions to control access.

Correct Answer:
B

Question #38
Which of the following is a characteristic of a relational database?
  1. A
    It utilizes key-value pairs.
  2. B
    It has undefined fields.
  3. C
    It is structured in nature.
  4. D
    It uses minimal memory.

Correct Answer:
C

Question #39
A data analyst is asked on the morning of April 9, 2020, to create a sales report that identifies sales year to date. The daily sales data is current through the end of the day. Which of the following date ranges should be on the report?
  1. A
    January 1, 2020 to April 1, 2020
  2. B
    January 1, 2020 to April 7, 2020
  3. C
    January 1, 2020 to April 8, 2020
  4. D
    January 1, 2020 to April 9, 2020

Correct Answer:
C

Question #40
Given the following data tables:



Which of the following MDM processes needs to take place FIRST?
  1. A
    Creation of a data dictionary
  2. B
    Compliance with regulations
  3. C
    Standardization of data field names
  4. D
    Consolidation of multiple data fields

Correct Answer:
C

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