Latest Success Metrics For Actual DA0-001 Exam 2023 Realistic Dumps
Updated DA0-001 Dumps Questions For CompTIA Exam
NEW QUESTION # 78
Taylor wants to investigate how manufacturing, marketing, and sales expenditures impact overall profitability for her company.
Which of the following systems is the most appropriate?
- A. OLAP.
- B. OLTP.
- C. Data warehouse.
- D. Data mart.
Answer: C
Explanation:
A Data mart is too narrow, because Taylor needs data from across multiple divisions.
OLAP is a broad term for analytical processing, and OLTP systems are transactional and not ideal for the task. Since Taylor is working with data across multiple different divisions, she will work with a Data warehouse.
NEW QUESTION # 79
What term is used to describe an interactive visualization that encourages people to explore data dynamically?
- A. Dashboard.
- B. Data point.
- C. Graphical representation.
- D. Data set.
Answer: A
Explanation:
A dashboard is a visual display of all of your data. While it can be used in all kinds of different ways, its primary intention is to provide information at-a-glance, such as KPIs. A dashboard usually sits on its own page and receives information from a linked database.
NEW QUESTION # 80
How many variables are normally shown on a standard heat map?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 81
The sales grocery store had an average of $8000 per day. The store introduced several advertising campaigns in order to increase sales. To determine whether the advertising campaigns have been effective in increasing sales, a sample of 64 days of sales was selected, and the sample mean was $8000 per day.
The correct null and alternative hypotheses to test whether there has been a significant increase are
- A. Null Sample mean is $8000; Alternative Sample mean is greater than or equal to $8000.
- B. Null Sample mean is $8000; Alternative Sample mean is greater than $8000.
- C. Null Population mean is $8000; Alternative; Population mean is greater than $8000.
- D. Null Population mean is $8000; Alternative; Population mean is greater than or equal to $8000.
Answer: C
Explanation:
Since you are trying to determine whether sales increased above the current average of $8000, the population mean for the null hypothesis is $8000; whereas the mean for the alternative hypothesis is greater than $8000. Hypotheses are always stated in terms of population you are working with, ruling out options A and B.
The test is whether sales are higher than the average of $8000 per day, which rules out option C.
NEW QUESTION # 82
You are working with a professional statistician to perform an analysis and would like to use a statistics package.
Which one of the following would be the most appropriate?
- A. Minitab.
- B. Rapid Miner.
- C. Power BI.
- D. QLIK.
Answer: A
Explanation:
Minitab is statistical analysis software. It can be used for learning about statistics as well as statistical research. Statistical analysis computer applications have the advantage of being accurate, reliable, and generally faster than computing statistics and drawing graphs by hand.
NEW QUESTION # 83
An analyst has been tracking company intranet usage and has been asked to create a chat to show the most-used/most-clicked portions of a homepage that contains more than 30 links. Which of the following visualizations would BEST illustrate this information?
- A. Heat map
- B. Infographic
- C. Scatter plot
- D. Pie chart
Answer: A
NEW QUESTION # 84
An analyst needs to provide a chart to identify the composition between the categories of the survey response data set:
Which of the following charts would be BEST to use?
- A. Histogram
- B. Scatter pot
- C. Line
- D. Waterfall
- E. Pie
Answer: E
NEW QUESTION # 85
Encryption is a mechanism for protecting data.
When should encryption be applied to data?
Choose the best answer.
- A. When data is at rest, unless you are using local storage.
- B. When data is in transit.
- C. When data is at rest or in transit.
- D. When data is at rest.
Answer: C
Explanation:
Correct answer B. When data is at rest or in transit.
To provide maximum protection, encrypt data both in transit and at rest.
NEW QUESTION # 86
What test formatting option indicates that a field is required in an entity relationship diagram?
- A. Italicization.
- B. Boldfacing.
- C. Capitalization.
- D. Underlining.
Answer: B
NEW QUESTION # 87
An analyst needs to provide a chart to identify the composition between the categories of the survey response data set:
Which of the following charts would be BEST to use?
- A. Histogram
- B. Scatter pot
- C. Line
- D. Waterfall
- E. Pie
Answer: E
NEW QUESTION # 88
When building a word cloud, what feature varies with the frequency that a word appears in the text?
- A. Font placement.
- B. Font size.
- C. Font color.
- D. Font style.
Answer: B
NEW QUESTION # 89
Which of the following is a common data analytics tool that is also used as an interpreted, high-level, general-purpose programming language?
- A. IBM SPSS
- B. SAS
- C. Microsoft Power B1
- D. Python
Answer: D
NEW QUESTION # 90
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. Mathematical
- B. Logical
- C. Aggregate
- D. Date
Answer: C
NEW QUESTION # 91
Which of the following is an example of a at flat file?
- A. PDF file
- B. CSV file
- C. JSON file
- D. JPEG file
Answer: D
NEW QUESTION # 92
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. A stratified phone survey of 100 people that is conducted between 2:00 p.m. and 3:00 p.m.
- B. Surveys sent to ten randomly selected homes within 5mi (8km) of the county's office
- C. A systematic survey that is sent to 100 single-family homes in the county
- D. Surveys sent to 100 randomly selected homes that are reflective of the population
Answer: D
NEW QUESTION # 93
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