Get Latest Feb-2025 Real DA0-001 Exam Questions and Answers FREE [Q124-Q147]

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Get Latest Feb-2025 Real DA0-001 Exam Questions and Answers FREE

Truly Beneficial For Your CompTIA Exam (Updated 312 Questions)

CompTIA DA0-001 exam is an important certification for professionals who work with data. It demonstrates a high level of knowledge and expertise in data management, analysis, and security. Professionals who hold this certification will be in high demand in a variety of industries, as data becomes increasingly important for businesses and organizations around the world. By passing the CompTIA DA0-001 exam, professionals can take their careers to the next level and demonstrate their commitment to excellence in their field.

CompTIA DA0-001 exam is a certification exam designed to test an individual’s knowledge of data management and analysis. DA0-001 exam is intended for professionals who are seeking to validate their understanding of data storage, processing, and analysis in order to advance their careers in the field of data management.

NEW QUESTION 124
A business unit made the following modification to the values in a table:

Which of the following data quality dimensions was applied in this scenario?

Integrity

Consistency

Completeness

Accuracy

NEW QUESTION 125
Given the following report:

Which of the following components need to be added to ensure the report is point-in-time and static? (Choose two.)

A control group for the phrases

A summary of the KPIs

Filter buttons for the status

The date when the report was last accessed

The time period the report covers

The date on which the report was run

NEW QUESTION 126
What output from a statistical test is used when performing hypothesis testing?

Standard deviation

R-value

Alpha value

P-value

NEW QUESTION 127
What effort has the goal of maintaining a single source of truth for the most important data elements handled by the organization?

MDM (Master Data Management)

IPS (Intrusion Prevention System)

MAM (Mobile Application Management)

DLP (Data Loss Prevention)

NEW QUESTION 128
Which of the following will MOST likely be streamed live?

Machine data

Key-value pairs

Delimited rows

Flat files

NEW QUESTION 129
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?

Aggregate

Logical

Date

Sort

NEW QUESTION 130
You are creating a dashboard that shows the total revenue for your organization broken out by a variety of factors. Which one of these is a measure, rather than a dimension?

Revenue.

Month.

Department.

Geographic region.

NEW QUESTION 131
A salesperson who is prospecting potential clients collected the following data:

Which of the following is an issue with this data?

Duplicate data

Invalid data

Missing value

Redundant data

NEW QUESTION 132
A data analyst is creating a report that will provide information about various regions, products, and time periods. Which of the following formats would be the MOST efficient way to deliver this report?

A workbook with multiple tabs for each region

A daily email with snapshots of regional summaries

A static report with a different page for every filtered view

A dashboard with filters at the top that the user can toggle

NEW QUESTION 133
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?

A stratified phone survey of 100 people that is conducted between 2:00 p.m. and 3:00 p.m.

A systematic survey that is sent to 100 single-family homes in the county

Surveys sent to ten randomly selected homes within 5mi (8km) of the county’s office

Surveys sent to 100 randomly selected homes that are reflective of the population

Explanation
Surveys sent to 100 randomly selected homes that are reflective of the population. This is because a random sample is a type of sample that is selected by using a random method, such as a lottery or a computer-generated number, which ensures that every element in the population has an equal chance of being selected. A random sample can result in a representative sample, which means that the sample reflects the characteristics and diversity of the population. By sending surveys to 100 randomly selected homes that are reflective of the population, the analyst can ensure that the sample is representative of the county’s households and their income levels. The other sampling methods are not likely to result in a representative sample. Here is why:
A stratified phone survey of 100 people that is conducted between 2:00 p.m. and 3:00 p.m. would result in a biased sample, which means that the sample favors or excludes certain groups or elements in the population.
By conducting the survey only between 2:00 p.m. and 3:00 p.m., the analyst would miss out on people who are not available or reachable at that time, such as those who are working or sleeping. This could affect the representativeness and generalizability of the sample.
A systematic survey that is sent to 100 single-family homes in the county would result in an unrepresentative sample, which means that the sample does not reflect the characteristics and diversity of the population. By sending surveys only to single-family homes, the analyst would ignore other types of households, such as apartments, condos, or mobile homes. This could affect the accuracy and reliability of the sample.
Surveys sent to ten randomly selected homes within 5mi (8km) of the county’s office would result in a small sample, which means that the sample size is too low to capture the variability and diversity of the population.
By sending surveys only to ten homes within a limited area, the analyst would miss out on many households that are located in different parts of the county. This could affect the precision and confidence of the sample.

NEW QUESTION 134
Randy scored 76 on a math test, Katie scored 86 on a science test, Ralph scored 80 on a history test, and Jean scored 80 on an English test. The table below contains the mean and standard deviation of the scores for each of the courses:

Using this information, which of the following students had the BEST score?

Randy

Katie

Ralph

Jean

NEW QUESTION 135
An analyst is working on a project for a director. During this process. the analyst pulled the dat a. created summarized tables and graphs with descriptions, created a report summary, and inserted all items into a report. After writing the report, which of the following would be the most appropriate next step?

Complete an audit on the data pulled for the report.

Complete a check for quality in the report.

Complete a review of the data and a check for consistency

Complete a trend analysis to be included in the report.

NEW QUESTION 136
When analyzing the values of two variables, you decide to convert both variables so they are on a scale of 0 to 1.
What term describes this action?

Filtering.

Normalization.

Transposition.

Aggregation.

NEW QUESTION 137
Joseph is interpreting a left skewed distribution of test scores. Joe scored at the mean, Alfonso scored at the median, and gaby scored and the end of the tail.
Who had the highest score?

Joseph

Joe

Alfonso

Gaby

NEW QUESTION 138
An e-commerce company recently tested a new website layout. The website was tested by a test group of customers, and an old website was presented to a control group. The table below shows the percentage of users in each group who made purchases on the websites:

Which of the following conclusions is accurate at a 95% confidence interval?

In Germany, the increase in conversion from the new layout was not significant.

In France, the increase in conversion from the new layout was not significant.

In general, users who visit the new website are more likely to make a purchase.

The new layout has the lowest conversion rates in the United Kingdom.

NEW QUESTION 139
Which of the following is a best practice when updating a legacy data source?

Placing old data in new fields

Keeping only the most recent data

Creating a codebook to document field changes

Removing the data source from production

NEW QUESTION 140
Which one of the following values would not be appropriately stored in integer data type?

-16

10921

1.2

NEW QUESTION 141
A database consists of one fact table that is composed of multiple dimensions. Depending on the dimension, each one can be represented by a denormalized table or multiple normalized tables. This structure is an example of a:

transactional schema.

star schema.

non-relational schema.

snowflake schema.

NEW QUESTION 142
Maria is developing a script that will perform some common analytics tasks.
In order to improve the efficiency of her workflow, she is using a package called the Tidyverse.
What programming language is she using?

Python

Ruby

C++

NEW QUESTION 143
Which of the following database schemas features normalized dimension tables?

Flat

Snowflake

Hierarchical

Star

NEW QUESTION 144
What data type is most appropriate for storing postal codes, such as, U.S. ZIP codes?

Location.

Float.

Integer.

String.

NEW QUESTION 145
An analyst is designing a dashboard to determine which site has the highest percentage of new customers. The analyst must choose an appropriate chart to include in the dashboard. The following data is available:

Which of the following types of charts should be considered to BEST display the data?

Include a bar chart using the site and the percentage of new customers data.

Include a line chart using the site and the percentage of new customers data.

Include a pie chat using the site and percentage of new customers data.

Include a scatter chart using the site and the percent of new customers data.

This is because 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 the percentage of new customers for different sites 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 site has the highest or lowest percentage of new customers, as well as show how much each site contributes to the total percentage of new customers. The other types of charts are not the best charts to display the data. Here is why:
A line chart is a type of chart that shows the change or the trend of a single variable over time, such as the percentage of new customers over months or years in this case. A line chart can be used to display and analyze the movement, cycle, or pattern of the variable, as well as identify any peaks, valleys, or fluctuations in the data. For example, a line chart can show how the percentage of new customers increases or decreases over time, as well as show if there are any seasonal or periodic variations in the data.
A pie chart is a type of chart that shows the proportion or the percentage of a single variable for different categories or groups, such as the percentage of new customers for different sites in this case. A pie chart can be used to display and analyze the composition, distribution, or share of the variable, as well as identify any segments, slices, or fractions in the data. For example, a pie chart can show how much each site represents of the total percentage of new customers, as well as show if there are any dominant or minor sites in the data.
A scatter chart is a type of chart that shows the relationship between two variables for each observation or unit in a data set, such as the percentage of new customers and another variable for each site in this case. A scatter chart 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 chart can show if there is a positive, negative, or no correlation between the percentage of new customers and another variable, such as sales revenue or customer satisfaction.

NEW QUESTION 146
The number of phone calls that the call center receives in a day is an example of:

continuous data.

categorical data.

ordinal data.

discrete data.

NEW QUESTION 147
A data set was recorded using multimedia technology. Which of the following is a necessary step on the way to interpretation?

Structural equation modeling

Transcription

Sequential analysis

Sampling

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Get Latest Feb-2025 Real DA0-001 Exam Questions and Answers FREE [Q124-Q147]

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