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| Section | Weight | Objectives |
|---|---|---|
| Data Concepts and Environments | 15% | - Data schemas, dimensions, and attributes - Structured, semi-structured, and unstructured data - Data storage systems: databases, data marts, warehouses, data lakes - Data types, structures, and formats |
| Visualization and Reporting | 23% | - Communicating insights and recommendations - Selecting appropriate visualizations and charts - Design principles and best practices - Building dashboards and reports |
| Data Analysis | 23% | - Descriptive and inferential statistics - Analytical techniques: trend, performance, exploratory, comparative - Interpreting results and identifying patterns/anomalies - Statistical methods: correlation, regression, hypothesis testing |
| Data Mining | 25% | - Data transformation, manipulation, and enrichment - Data profiling, cleansing, and validation - Querying and retrieving data - Data acquisition and integration methods |
| Data Governance, Quality and Controls | 14% | - Data quality standards and measurement - Data lifecycle management and controls - Data governance frameworks and policies - Data privacy, security, and compliance |
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NEW QUESTION # 297
A junior web developer is developing a new application where users can upload short videos. The first task is to create a homepage that shows the headline "Upload Your Short Videos" and a clickable button that says "upload now".
Which of the following HTML commands would help the developer to complete the task successfully?
Answer: D
Explanation:
The HTML commands that would help the developer to complete the task successfully are <h1>Upload Your Short Videos</h1> and <button>upload now</button>. The <h1> tag defines a heading level 1, which is the largest and most important heading on a webpage. The <button> tag defines a clickable button that can perform some action when clicked. The other options are not suitable for the task, as they either use the wrong tags or do not create a clickable button. The <span> tag defines a section of text with no specific meaning or formatting. The <p> tag defines a paragraph of text. The <hl> tag does not exist in HTML. Reference: HTML Tags - W3Schools
NEW QUESTION # 298
An analyst is designing a dashboard that will provide a story of the sales and sales customer ratio. The following data is available:
Which of the following charts should the analyst consider including in the dashboard?
Answer: C
Explanation:
For a dashboard that aims to tell a story about sales and the sales customer ratio, a column chart is an effective choice. Column charts are particularly useful for showing data changes over a period of time or for illustrating comparisons among items. In this case, a column chart can clearly display the sales figures for each site, allowing for easy comparison across different sites. Additionally, it can be used to represent the sales customer ratio by showing the proportion of sales per customer, which can provide insights into customer behavior and sales effectiveness.
* Line charts are best suited for displaying data trends over time, rather than for comparing individual categories.
* Pie charts could show the proportion of sales for each site, but they are not as effective as column charts for comparing multiple categories.
* Scatter charts are used to show the relationship between two variables, which is not the focus in this scenario.
References:
* Effective Use of Column Charts1
* Choosing the Right Chart for Your Data2
* Sales Dashboards: Examples & Templates3
NEW QUESTION # 299
A survey asks participants to rate a company on a scale of one to ten. Which of the following best describes the rating variable?
Answer: A
Explanation:
The rating variable in a survey where participants rate a company on a scale of one to ten is best described as ordinal. This is because the ratings are ranked in order, with each number representing a position on a scale of satisfaction or quality. The numbers are not just labels (which would be nominal), nor do they represent a continuous spectrum (which would be continuous). They also do not fit the definition of categorical, as that implies non-ordered groups or categories. In an ordinal scale, the order of the values is significant and meaningful12.
Reference:
Qualtrics explains that ordinal scales have answer sets that occur in a logical and systematic order, providing qualitative data.
Zonka Feedback describes a 1 to 10 rating scale survey, indicating that the numbers represent a ranking from most negative to most positive experience, which aligns with the characteristics of an ordinal scale.
NEW QUESTION # 300
Which of the following data governance concepts fits into the security requirements category?
Answer: C
NEW QUESTION # 301
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?
Answer: C
Explanation:
This is because a logical function is a type of function that returns a value based on a condition or a set of conditions. A logical function can be used to generate the data in the Sales_indicator column by comparing the values in the Sales column with a threshold of $50,000 and returning either "Exceeded $50,000" or "Not exceeded $50,000" accordingly. For example, a logical function in Excel that can achieve this is:
The other functions are not suitable for generating the data in the Sales_indicator column. Here is why:
Aggregate is a type of function that performs a calculation on a group of values, such as sum, average, count, etc. An aggregate function cannot generate the data in the Sales_indicator column because it does not compare the values in the Sales column with a threshold or return a text value based on a condition.
Date is a type of function that manipulates or extracts information from dates, such as year, month, day, etc. A date function cannot generate the data in the Sales_indicator column because it does not use the values in the Sales column or return a text value based on a condition.
Sort is a type of function that arranges the values in a column or a range in ascending or descending order. A sort function cannot generate the data in the Sales_indicator column because it does not create a new column or return a text value based on a condition.
NEW QUESTION # 302
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