2024 DA0-001 Dumps PDF - DA0-001 Real Exam Questions Answers [Q12-Q34]

QUESTION 12
Which of the following can be used to translate data into another form so it can only be read by a user who has a key or a password?

Data encryption.

Data transmission.

Data masking.

Data protection.

QUESTION 13
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 histogram

A scatter plot

A heat map

A bar chart

QUESTION 14
What cybersecurity goal protects an organization’s data from unauthorized modification?

Confidentiality.

Non-repudiation.

Integrity.

Availability.

QUESTION 15
An analyst has conducted a review of business questions. Which of the following should the analyst do next to conduct an analysis?

Determine the data needs and review the observations.

Determine the data needs and sources for analysis.

Determine the data needs and schedule interviews.

Determine the data needs and begin the analysis.

QUESTION 16
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.

QUESTION 17
A research analyst wants to determine whether the data being analyzed is connected to other datapoints. Which of the following is the BEST type of analysis to conduct?

Trend analysis

Performance analysis

Link analysis

Exploratory analysis

Explanation
This is because link analysis is a type of analysis that determines whether the data being analyzed is connected to other datapoints, such as entities, events, or relationships. Link analysis can be used to identify and visualize the patterns, networks, or associations among the datapoints, as well as measure the strength, direction, or frequency of the connections. For example, link analysis can be used to determine if there is a connection between a customer’s purchase history and their loyalty program status. The other types of analysis are not the best types of analysis to conduct to determine whether the data being analyzed is connected to other datapoints. Here is why:
Trend analysis is a type of analysis that determines whether the data being analyzed is changing over time, such as increasing, decreasing, or fluctuating. Trend analysis can be used to identify and visualize the patterns, cycles, or movements in the data points, as well as measure the rate, direction, or magnitude of the changes. For example, trend analysis can be used to determine if there is a change in a company’s sales revenue over a period of time.
Performance analysis is a type of analysis that determines whether the data being analyzed is meeting certain goals or objectives, such as targets, benchmarks, or standards. Performance analysis can be used to identify and visualize the gaps, deviations, or variations in the data points, as well as measure the efficiency, effectiveness, or quality of the outcomes. For example, performance analysis can be used to determine if there is a gap between a student’s test score and their expected score based on their previous performance.
Exploratory analysis is a type of analysis that determines whether there are any insights or discoveries in the data being analyzed, such as patterns, relationships, or anomalies. Exploratory analysis can be used to identify and visualize the characteristics, features, or behaviors of the data points, as well as measure their distribution, frequency, or correlation. For example, exploratory analysis can be used to determine if there are any outliers or unusual values in a dataset.

QUESTION 18
Data stewards protect the organization from legal violations that may result in costly fines and negative publicity.

True.

False.

QUESTION 19
While reviewing survey data, a research analyst notices data is missing from all the responses to a single question. Which of the following methods would BEST address this issue?

Replace missing data.

Remove duplicate data.

Replace redundant data.

Remove invalid data.

QUESTION 20
Which one of the following is not a good example of discrete data type?

Number of children.

Years of experience.

Attendees at a meeting.

Temperature of a room.

QUESTION 21
An analyst has received the requirements for an internal user dashboard. The analyst confirms the data sources and then creates a wireframe. Which of the following is the NEXT step the analyst should take in the dashboard creation process?

Optimize the dashboard.

Create subscriptions.

Get stakeholder approval.

Deploy to production.

QUESTION 22
Which of the following differentiates a flat text file from other data types?

Data is separated by a delimiter.

Data is stored in defined rows.

Data is defined with key-value pairs.

Data is housed in a markup language.

QUESTION 23
An analyst is currently working on a ticket for revamping a company-wide dashboard that has been in use for five years. Which of the following should be the first step in the development process?

Talk to the group that made the request to determine the desired goal.

Make changes to a frequently used report that is already in production.

Build an additional dashboard with fewer views that are tailored toward each specific team.

Develop a more streanMined dashboard to roll out by the next delivery date.

QUESTION 24
Which of the following techniques is used to quantify data?

Decoding

Enumeration

Coding

Structure

QUESTION 25
A data analyst for a media company needs to determine the most popular movie genre. Given the table below:

Which of the following must be done to the Genre column before this task can be completed?

Append

Merge

Concatenate

Delimit

QUESTION 26
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 histogram

A scatter plot

A heat map

A bar chart

QUESTION 27
A data analyst has a set with more than 40.000 rows in the sample schema below:

The analyst would like to create one column that contains the customers’ birth dates. Which of the following data quality dimensions would BEST explain the reason for compilation?

Data accuracy

Data completeness

Data duplication

Data integrity

QUESTION 28
Which of the following data cleansing issues will be fixed when a DISTINCT function is applied?

Missing data

Duplicate data

Redundant data

Invalid data

QUESTION 29
The current date is July 14, 2020. A data analyst has been asked to create a report that shows the company’s year-over-year Q2 2020 sales. Which of the following reports should the analyst compare?

A Q2 2020 and Q4 2019

YTD 2020 and YTD 2019

Q2 2020 and Q2 2019

Q2 2020 and Q2 2021

QUESTION 30
Which of the following database schemas features normalized dimension tables?

Flat

Snowflake

Hierarchical

Star

QUESTION 31
Andrew conducts a study and wants to capture eye color.
What kind of data is eye color?
Choose the best response.

Discrete.

Categorical.

Continuous.

Alphanumeric.

QUESTION 32
Which of the following describes the method of sampling in which elements of data are selected randomly from each of the small subgroups within a population?

Simple random

Cluster

Systematic

Stratified

Explanation
This is because stratified is a type of sampling in which elements of data are selected randomly from each of the small subgroups within a population, such as age groups, gender groups, or income groups. Stratified sampling can be used to ensure that the sample is representative and proportional of the population, as well as reduce the sampling error or bias. For example, stratified sampling can be used to select a sample of voters from different political parties based on their proportion in the population. The other types of sampling are not the types of sampling in which elements of data are selected randomly from each of the small subgroups within a population. Here is why:
Simple random is a type of sampling in which elements of data are selected randomly from the entire population, without dividing it into any subgroups. Simple random sampling can be used to ensure that every element in the population has an equal chance of being selected, as well as avoid any systematic error or bias. For example, simple random sampling can be used to select a sample of students from a school by using a lottery or a computer-generated number.
Cluster is a type of sampling in which elements of data are selected randomly from a few large subgroups within a population, such as regions, districts, or schools. Cluster sampling can be used to reduce the cost and complexity of sampling, as well as increase the feasibility and convenience of sampling. For example, cluster sampling can be used to select a sample of households from a few neighborhoods by using a map or a list.
Systematic is a type of sampling in which elements of data are selected at regular intervals from an ordered list or sequence within a population, such as every nth element or every kth element. Systematic sampling can be used to simplify and speed up the sampling process, as well as ensure that the sample covers the entire range or scope of the population. For example, systematic sampling can be used to select a sample of books from a library by using an alphabetical order or a numerical order.

QUESTION 33
Which of the following best describes how discrete data differs from continuous data?

Discrete data cannot create a sloped line.

Discrete data can only be a finite number of values.

Discrete data can have decimal points.

Discrete data applies only to numbers.

QUESTION 34
An analyst is working with the income data of suburban families in the United States. The data set has a lot of outliers, and the analyst needs to provide a measure that represents the typical income. Which of the following would BEST fulfill the analyst’s goal?

Median

Mean

Mode

Standard deviation

2024 DA0-001 Dumps PDF – DA0-001 Real Exam Questions Answers [Q12-Q34]

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