DA0-001 - Latest Training Dumps

QUESTION 26
Consider the following dataset which contains information about houses that are for sale:

Which of the following string manipulation commands will combine the address and region name columns to create a full address?
full_address————————- 85 Turner St, Northern Metropolitan 25 Bloomburg St, Northern Metropolitan 5 Charles St, Northern Metropolitan 40 Federation La, Northern Metropolitan 55a Park St, Northern Metropolitan

SELECT CONCAT(address, ‘ , ‘ , regionname) AS full_address FROM melb LIMIT 5;

SELECT CONCAT(address, ‘-‘ , regionname) AS full_address FROM melb LIMIT 5;

SELECT CONCAT(regionname, ‘ , ‘ , address) AS full_address FROM melb LIMIT 5

SELECT CONCAT(regionname, ‘-‘ , address) AS full_address FROM melb LIMIT 5;

QUESTION 27
A user imports a data file into the accounts payable system each day. On a regular basis. the field input is not what the system is expecting. so it results in an error for the row and a broken import process. To resolve the issue, the user opens the file, finds the error in the row, and manually corrects it before attempting the import again. The import sometimes breaks on subsequent attempts. though. Which of the following changes should be made to this process to reduce the number of errors?

Delete all incorrect inputs and upload the corrected file.

Have the user manually review the file for data completeness before loading it

Create a data field to data type validator to run the file through prior to import.

Spot-check the file prior to import to catch and correct field errors.

QUESTION 28
Which of the following reports can be used when insight into operational performance is needed each Wednesday?

Static report

Tactical report

Recurring report

Ad hoc report

QUESTION 29
Given the table below:

Which of the following variable types BEST describes the “Year” column?

Numeric

Date

Alphanumeric

Text

QUESTION 30
Andy is a pricing analyst for a retailer. Using a hypothesis test, he wants to assess whether people who receive electronic coupons spend more on average.
What should Andy’s null hypothesis be?

People who receive electronic coupons spend more on average.

People who receive electronic coupons spend less on average.

People who receive electronic coupons do not spend more on average.

People who do not receive electronic coupons spend more on average.

QUESTION 31
What is the most time-consuming of the practices that authorize international data transfers under GDPR?

Binding corporate rules.

Standard contractual clauses.

Memoranda of understanding.

Privacy shield.

QUESTION 32
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

Explanation
The date on which the report was run. This is because the time period the report covers and the date on which the report was run are two components that need to be added to ensure the report is point-in-time and static, which means that the report shows the data as it was at a specific moment or interval in time, and does not change or update with new data. By adding the time period the report covers and the date on which the report was run, the analyst can indicate when and for how long the data was collected and analyzed, as well as avoid any confusion or ambiguity about the currency or validity of the data. The other components do not need to be added to ensure the report is point-in-time and static. Here is why:
A control group for the phrases is a type of group that serves as a baseline or a reference for comparison with another group that is exposed to some treatment or intervention, such as a target phrase in this case. A control group for the phrases does not need to be added to ensure the report is point-in-time and static, because it does not affect the time frame or the stability of the data. However, a control group for the phrases could be useful for evaluating the effectiveness or impact of the target phrases on customer satisfaction or retention.
A summary of the KPIs is a type of document that provides an overview or a highlight of the key performance indicators (KPIs), which are measurable values that indicate how well an organization or a process is achieving its goals or objectives. A summary of the KPIs does not need to be added to ensure the report is point-in-time and static, because it does not affect the time frame or the stability of the data. However, a summary of the KPIs could be useful for communicating or presenting the main findings or insights from the report.
Filter buttons for the status are a type of feature or function that allows users to select or deselect certain values or categories in a column or a table, such as ticket statuses in this case. Filter buttons for the status do not need to be added to ensure the report is point-in-time and static, because they do not affect the time frame or the stability of the data. However, filter buttons for the status could be useful for exploring or analyzing different aspects or segments of the data.

QUESTION 33
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

Explanation
This is because a scatter plot is a type of chart that shows the relationship between two variables for each observation or unit in a data set, such as study hours and exam scores for each student in this case. A scatter plot 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 plot can show if there is a positive, negative, or no correlation between study hours and exam scores, as well as show if there are any students who have unusually high or low exam scores compared to their study hours. The other charts are not the best charts to represent the relationship between the variables. Here is why:
A histogram is a type of chart that shows the frequency or the count of values in a single variable for different intervals or bins, such as exam scores for different ranges in this case. A histogram can be used to display and analyze the distribution, shape, or spread of the variable, as well as identify any gaps, peaks, or skewness in the data. For example, a histogram can show if most students have high, low, or average exam scores, as well as show if there are any intervals that have no students at all.
A heat map is a type of chart that shows the intensity or the magnitude of values in two variables for different categories or groups, such as exam scores and study hours for different student names in this case. A heat map can be used to display and analyze the variation, contrast, or comparison among the categories or groups, as well as identify any hot spots, cold spots, or gradients in the data. For example, a heat map can show which students have higher or lower exam scores and study hours than others, as well as show if there is a color pattern that indicates a relationship between exam scores and study hours.
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 exam scores for different student names 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 students have higher or lower exam scores than others, as well as show if there are any students who have exceptionally high or low exam scores.

QUESTION 34
Daniel is using the structured Query language to work with data stored in relational database.
He would like to add several new rows to a database table.
What command should he use?

SELECT.

ALTER.

INSERT.

UPDATE.

QUESTION 35
An analyst is required to run a text analysis of data that is found in articles from a digital news outlet. Which of the following would be the BEST technique for the analyst to apply to acquire the data?

Web scraping

Sampling

Data wrangling

ETL

QUESTION 36
A publishing group has requested a dashboard to track submissions before publication. A key requirement is that all changes are tracked, as multiple users will be checking out documents and editing them before submissions are considered final. Which of the following is the BEST way to meet this stakeholder requirement?

Display the version number next to each submission on the dashboard.

Present a data refresh date at the top of the dashboard.

Confirm the dashboard is adhering to the corporate style guide.

Use permissions to ensure users only see certain versions of the submissions.

QUESTION 37
Which of the following is a process that is used during data integration to collect, blend, and load data?

MDM

ETL

OLTP

BI

QUESTION 38
You would like to measure how well an organization is achieving its goals.
What type of analysis should you perform?

Performance analysis.

Outlier analysis.

Predictive analysis.

Trend analysis.

QUESTION 39
A data analyst has been asked to create a sales report that calculates the rolling 12-month average for sales. If the report will be published on November 1, 2020, which of the following months shouts the report cover?

October 1, 2019 to October 31, 2020

October 31, 2020 to November 1, 2021

November 1, 2019 to October 31, 2020

October 31, 2019 to October 31, 2020

QUESTION 40
Which of the following will MOST likely be streamed live?

Machine data

Key-value pairs

Delimited rows

Flat files

Category DA0-001

DA0-001 Exam Info and Free Practice Test Professional Quiz Study Materials [Q26-Q40]