A fully updated 2023 DA0-001 Exam Dumps exam guide from training expert Exam4PDF
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NEW QUESTION # 58
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?
- A. Mean
- B. Mode
- C. Standard deviation
- D. Median
Answer: A
NEW QUESTION # 59
You would like to combine the text in two different strings to form a single string.
What action are you performing?
- A. Parsing.
- B. Trimming.
- C. Case conversion.
- D. Concatenation.
Answer: D
Explanation:
Simply defined, concatenation is the act of linking things together. In Microsoft Excel, the concatenation function is one of many text functions, which allows users to combine data distributed over multiple columns.
The concatenation of two or more numbers is the number formed by concatenating their numerals.
For example, the concatenation of 1, 234, and 5678 is 12345678.
NEW QUESTION # 60
When taking the test at home, how much extra time is allowed compared to the in-person test?
- A. None.
- B. 30 minutes
- C. 10 minutes
- D. 15 minutes
Answer: A
NEW QUESTION # 61
Which of the following should be accomplished NEXT after understanding a business requirement for a data analysis report?
- A. Determine the data necessary for the analysis
- B. Build a mock dashboard/presentation layout.
- C. Perform exploratory data analysis.
- D. Rephrase the business requirement.
Answer: C
NEW QUESTION # 62
What type of regulation is the Payment Card Industry Data Security Standard (PCIDSS)?
- A. Civil law
- B. Industry regulation
- C. Criminal law
- D. Administrative law
Answer: B
NEW QUESTION # 63
Which of the following will MOST likely be streamed live?
- A. Flat files
- B. Key-value pairs
- C. Machine data
- D. Delimited rows
Answer: A
NEW QUESTION # 64
A customer list from a financial services company is shown below:
A data analyst wants to create a likely-to-buy score on a scale from 0 to 100, based on an average of the three numerical variables: number of credit cards, age, and income. Which of the following should the analyst do to the variables to ensure they all have the same weight in the score calculation?
- A. Calculate the percentiles of the variables.
- B. Calculate the standard deviations of the variables.
- C. Normalize the variables.
- D. Recode the variables.
Answer: B
NEW QUESTION # 65
A data analyst has been asked to derive a new variable labeled "Promotion_flag" based on the total quantity sold by each salesperson. Given the table below:
Which of the following functions would the analyst consider appropriate to flag "Yes" for every salesperson who has a number above 1,000,000 in the Quantity_sold column?
- A. Logical
- B. Mathematical
- C. Aggregate
- D. Date
Answer: C
NEW QUESTION # 66
Which of the following statistical methods requires two or more categorical variables?
- A. Z-test
- B. Simple linear regression
- C. Two-sample t-test
- D. Chi-squared test
Answer: D
NEW QUESTION # 67
Emma is working in a data warehouse and finds a finance fact table links to an organization dimension, which in turn links to a currency dimension that not linked to the fact table.
What type of design pattern is the data warehouse using?
- A. Snowflake.
- B. Star.
- C. Sun.
- D. Comet.
Answer: A
Explanation:
Correct answer C. Snowflake.
Since the dimension links to a dimension that isn't connected to the fact table, it must be a Snowflake, with a Star, all dimensions link directly to the fact table, Sun and Comet are not data warehouse design patterns.
NEW QUESTION # 68
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. Surveys sent to 100 randomly selected homes that are reflective of the population
- B. A stratified phone survey of 100 people that is conducted between 2:00 p.m. and 3:00 p.m.
- C. A systematic survey that is sent to 100 single-family homes in the county
- D. Surveys sent to ten randomly selected homes within 5mi (8km) of the county's office
Answer: A
NEW QUESTION # 69
Which of the following data types would a telephone number formatted as XXX-XXX-XXXX be considered?
- A. Text
- B. Float
- C. Numeric
- D. Date
Answer: C
NEW QUESTION # 70
A data analyst has been asked to organize the table below in the following ways:
By sales from high to low -
By state in alphabetic order -
Which of the following functions will allow the data analyst to organize the table in this manner?
- A. Grouping
- B. Sorting
- C. Filtering
- D. Conditional formatting
Answer: A
NEW QUESTION # 71
What cybersecurity goal protects an organization's data from unauthorized modification?
- A. Availability.
- B. Confidentiality.
- C. Non-repudiation.
- D. Integrity.
Answer: D
Explanation:
The term data integrity refers to the accuracy and consistency of data. When creating databases, attention needs to be given to data integrity and how to maintain it. A good database will enforce data integrity whenever possible. For example, a user could accidentally try to enter a phone number into a date field.
NEW QUESTION # 72
Which action is mandated by the Gramm-Leach-Bliley Act (GLBA) Safeguards Rule?
- A. The development of written information security policy.
- B. The disclosure of information sharing practices.
- C. The distinguishing between consumers and customers.
- D. The provision of a privacy notice to consumers.
Answer: A
NEW QUESTION # 73
A recurring event is being stored in two databases that are housed in different geographical locations. A data analyst notices the event is being logged three hours earlier in one database than in the other database. Which of the following is the MOST likely cause of the issue?
- A. The data analyst is not querying the databases correctly.
- B. The databases are recording the event in different time zones.
- C. The second database is logging incorrectly.
- D. The databases are recording different events.
Answer: B
NEW QUESTION # 74
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?
- A. October 1, 2019 to October 31, 2020
- B. October 31, 2020 to November 1, 2021
- C. October 31, 2019 to October 31, 2020
- D. November 1, 2019 to October 31, 2020
Answer: D
NEW QUESTION # 75
Which one the following is not considered an aggregate function?
- A. MIN
- B. SELECT
- C. MAX
- D. SUM
Answer: B
NEW QUESTION # 76
Amanda needs to create a dashboard that will draw information from many other data sources and present it to business leaders.
Which one of the following tools is least likely to meet her needs?
- A. SPSS Modeler.
- B. Power BI.
- C. Tableau.
- D. QuickSight.
Answer: A
Explanation:
SPSS Modeler.
QuickSight, Tableau, and Power BI are all powerful analytics and reporting tools that can pull data from a variety of sources. SPSS Modeler is a powerful predictive analytics platform that is designed to bring predictive intelligence to decisions made by individuals, groups, systems and your enterprise.
NEW QUESTION # 77
Which of the following value is the measure of dispersion "range" between the scores of ten students in a test.
The scores of ten students in a test are 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
The correct answer is: 60
Range is the interval between the highest and the lowest score.
Range is a measure of variability or scatteredness of the varieties or observations among themselves and does not give an idea about the spread of the observations around some central value.
Symbolically R = Hs - Ls.
Where R = Range; Hs is the 'Highest score' and Ls is the Lowest Score.
The scores of ten students in a test are: 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.
The highest score is 77 and the lowest score is 17.
So the range is the difference between these two scores Range = 77 - 17 = 60
NEW QUESTION # 78
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