INTRODUCTION – Data Visualizations and Presentations
It is exactly to train you to even improve this efficacy with your stories such that they are ethical, accessible, and definitely professional. Follow advanced data visualization practices through Tableau to create compelling and impact visuals. Besides, talk about responsible data presentation, including ethics and transparency, and also cover some of the advanced features of Tableau for dynamic storytelling. At the end of this segment, you would be able to communicate insights effectively, through visuals designed for different audiences and yet maintaining professionalism in the data analysis industry.
Learning Objectives:
- Engage an audience with dynamic visualization by using interactivity and movement in Tableau.
- Use data visualization to explain technical ideas to nontechnical audiences.
- Be prepared and understand how to modify the visuals to meet the requirement of a specific audience, thus leading to different modifications of the story.
- Develop visualizations with Tableau that efficiently monitor and report the story with respect to a dataset.
- Understand the ethical responsibility to remain true to the dataset when creating data visualizations.
- Find ways to build accessible dashboards, presentations, and charts using Tableau.
PRACTICE QUIZ: TEST YOUR KNOWLEDGE: PRESENT A STORY
1. Fill in the blank: In Tableau, qualitative data values called _____ are used to categorize and group data to reveal details about it.
- dimensions (CORRECT)
- aggregates
- comparisons
- measures
Correct: Qualitative data, also known as dimensions, are appended to data to facilitate their classification and grouping. Such dimensions typically include attributes such as categories, labels, or characteristics (e.g., product type, region, or customer demographic) that segment a body of data for the analytical context. These dimensions allow the analysis of trends and relations in the data.
2. What does the term continuous indicate in data analytics?
- A measure or dimension will continuously reduce until it reaches zero.
- A measure or dimension has a finite and countable number of outcomes.
- A measure or dimension is continuously growing at an exponential rate.
- A measure or dimension has an infinite and uncountable number of outcomes. (CORRECT)
Correct: Continuous is a mathematical term referring to the unlimited number of values or measurements that the specified measure can take place in a specified range. Continuous measures or variables are the opposite of discrete measures or variables. Height, weight, temperature, or time can be expressed with a continuous variable, that is, infinitely divisible through smaller units. In other words, the values can be measured with very high precision.
PRACTICE QUIZ: ACTIVITY: DESIGN A BAR GRAPH THAT TELLS A STORY IN TABLEAU PUBLIC
1. Did you complete this activity?
- Yes (CORRECT)
- No
Correct: I welcome you! Data visualization is thus one of the key in-demand skills in the data profession, which is helpful in making data insights simple and sweet. Taking a good feedback of your quiz answers, you will obviously yield results about your performance, and have a better comprehension of how to polish your skills by comparing your work with an entire exemplar. So continue working hard as you learn and further improve your data visualization skills! If you would need further assistance, ask.
2. In order to structure the data to show only the most relevant details based on the business need, which of the following should your visualization include? Select all that apply.
- Data for the hours of 5:00 p.m. to 8:00 a.m.
- Data for the year 2018 (CORRECT)
- Data for all weekdays (CORRECT)
- Data for the hours of 8:00 a.m. to 5:00 p.m. (CORRECT)
Correct: All right; the director made an analysis of bicycle rentals for the year 2018 with data restricted to weekdays between 8 a.m. and 5 p.m.
Correct: Your job is to find the times during weekdays between 8 in the morning and 5 in the evening that recorded lowest bike rentals in the year 2018, as requested by the director.
3. What are some goals of how you use color, contrast, labeling, and emphasis elements in the data visualization? Select all that apply.
- Present all of the available data.
- Meet accessibility standards. (CORRECT)
- Help the audience understand important information on the chart. (CORRECT)
- Include the colors of the company requested for the visualization. (CORRECT)
Correct: Color and contrast must be carefully considered to make the bars distinguishable to all audience members, including those with color blindness. The design should use, but not be limited to, the company’s requested colors without compromising adequate contrast for easy interpretation of the information.
Correct: The data visualization should have characteristics of color, contrast, labeling, and emphasis in order to elucidate relevant data points. It should also prove accessibility to all, including colors defined by the company. It should ensure that contrast and design are noticeable to every audience, including those with color blindness.
Correct: They also need to be in gradations of orange as required by the organization, but still use all accessibility standards. Therefore, all use colors with contrast and different colors, so that people, including the colorblind, can read all the informations and key messages from the chart without any hassle.
PRACTICE QUIZ: ACTIVITY: BUILD AN INTERACTIVE DASHBOARD IN TABLEAU PUBLIC
1. Did you complete this activity?
- Yes (CORRECT)
- No
Correct: Thank you for that. I am happy that I could help. So cool that you are working with dynamic dashboards in Tableau! You’re right, though. They really do enable you to simplify complex data. Review feedback on quiz questions to check how you have performed, and then compare your own with the finished exemplar in the next course item to learn more lessons. Any other thing I could help you with?
2. The dashboard you built divides the data into two bar graphs. What do each of the bar graphs illustrate? Select two answers.
- The data by dates for each holiday
- The data by dates for each weekend day
- The data divided by dates for each day of the week (CORRECT)
- The data divided by dates and months (CORRECT)
Correct: The Weekday Bar Graph represents the data by different days falling in a week. Comparatively, the Adjacent Day Bar Graph is categorized by dates along with months and can rough the change for different months with specific data for days.
3. Which design elements help you showcase relevant information in your dashboard? Select all that apply.
- Portrait format
- Contrasting colors (CORRECT)
- Filters (CORRECT)
- Titles (CORRECT)
Correct: Utilizing contrasting colors is important to help all audience members, including those with color vision deficiencies, clearly discern the bars in the graph. Every worksheet must have a unique title for further context and clarity so that viewers can easily understand the data. Making useful filters enables any user to work with the dashboard while allowing the user to focus on the most pertinent facts according to his or her needs-an aspect which enhances the overall usability and effectiveness of the dashboard.
Correct: The relevant, useful filter on the sidebar minimizes the amounts of clutter from the dashboard tab. This enables the users to concentrate and focus on only important data. Each worksheet would further have its own title, which makes it clearer and more contextualized for the audience regarding where they should be in the dashboard. In addition, the use of contrast colors makes distinguished key points in the data. This helps the user to find and highlight the relevant information. All of these bring forth design elements that maximize usability and effectiveness on the dashboard.
Correct: Assigning titles to the worksheets makes them easy to identify and differentiate from one another on the dashboard, thus facilitating navigation. Making useful filters would also enable users to personalize their view so that only the most significant data would be visible without distraction. Contrasting colors would even further help to identify key data points from the rest so that users can more easily identify and interpret the most important information within the dashboard. This would, in a nutshell, aid in improved clarity and usability of the dashboard.
PRACTICE QUIZ: TEST YOUR KNOWLEDGE: ADVANCED TABLEAU
1. A histogram is a data visualization that depicts a precise representation of the distribution of values in a dataset.
- True
- False (CORRECT)
Correct: A histogram is a type of data visualization that shows the distribution of numerical data by dividing the data into bins or intervals. It displays the frequency (or count) of data points that fall within each bin, allowing you to see patterns such as skewness, central tendency, and the spread of the data. By visually representing the distribution, a histogram provides insights into the shape, spread, and potential outliers in the dataset.
2. Which Tableau tool enables users to interact with data visualizations or dashboards by giving them control of a selection?
- Bin
- Action (CORRECT)
- Set
- Blending
Correct: Tableau has provided an action which enables the user to interact with a visualization or dashboard by means of selections or generating an event. Actions provide functionality that is dynamic for the dashboard-such as filtering, highlighting a particular value, or navigating from one sheet or dashboard to another in response to user input. This adds an element of interactivity in the user experience, which allows them to explore and analyze data according to their own preferences and perception.
3. A data professional wants to visualize data in a time series. Which approach should they take?
- Generic-to-specific
- Specific-to-generic
- Chronological (CORRECT)
- Systemized
Correct: The most effective strategy for this kind of information is chronological because it gets across best when represented in a time series.
QUIZ: MODULE 4 CHALLENGE
1. Which of the following statements correctly describe dimensions and measures in Tableau? Select all that apply.
- Dimensions are numeric values that can be aggregated or placed in calculations.
- Measures are qualitative data values used to categorize and group data.
- Dimensions are qualitative data values used to categorize and group data. (CORRECT)
- Measures are numeric values that can be aggregated or placed in calculations. (CORRECT)
Correct!
2. Fill in the blank: The term _____ is a mathematical concept indicating that a measure or dimension has a finite and countable number of outcomes.
- radical
- discrete (CORRECT)
- ordinal
- continuous
Correct!
3. In Tableau, what feature enables the creation of data value groupings in a histogram?
- Bins (CORRECT)
- Plots
- Sorts
- Joins
Correct!
4. A data professional at a lumber supplier creates a presentation for stakeholders about how environmental conditions affect tree growth. They first focus on growth patterns in 20 counties. Then, they share broader insights about growth nationwide. What type of approach to data visualization does this scenario describe?
- Generic-to-specific
- Broad
- Specific-to-generic (CORRECT)
- Chronological
Correct!
5. A data analytics team at a jewelry designer creates a presentation for stakeholders about supplier sourcing practices. They first share broad insights about suppliers nationwide. Then, they focus on suppliers in particular states and counties. What type of approach to data visualization does this scenario describe?
- Broad
- Generic-to-specific (CORRECT)
- Specific-to-generic
- Chronological
Correct!
6. A data professional at a shoe retailer creates a presentation for stakeholders about the best-selling sneakers. They share insights about three popular sneaker brand sales, beginning with January and continuing through year end. What type of approach to data visualization does this scenario describe?
- Generic-to-specific
- Specific-to-generic
- Chronological (CORRECT)
- Fluid
Correct!
7. Fill in the blank: A set in Tableau is a custom field of data created from a _____ based on custom conditions.
- Dashboard
- notebook
- data warehouse
- larger dataset (CORRECT)
Correct!
8. Fill in the blank: A worksheet in Tableau Public is a data page that contains a _____ view of a data visualization.
- Duplicated
- mirrored
- single (CORRECT)
- paired
Correct!
9. In Tableau, what feature is used to determine how the data is segmented and compared in a histogram?
- Joins
- Filters
- Sources
- Bins (CORRECT)
Correct!
10. A data professional at a convention center creates a presentation for stakeholders about the events that take place in their facility. They share insights about meetings over a five-year period, beginning in 2018 and continuing through 2023. What type of approach to data visualization does this scenario describe?
- Fluid
- Specific-to-generic
- Chronological (CORRECT)
- Generic-to-specific
Correct!
11. Fill in the blank: A _____ in Tableau is a custom field of data created from a larger dataset based on custom conditions.
- Set (CORRECT)
- worksheet
- trend line
- custom view
Correct!
12. Fill in the blank: A _____ in Tableau Public is a data page that contains a single view of a data visualization.
- Bin
- Worksheet (CORRECT)
- source
- field
Correct!
13. Which of the following statements correctly describe dimensions and measures in Tableau? Select all that apply.
- Dimensions can be aggregated or placed in calculations.
- Dimensions are used to categorize and group data. (CORRECT)
- Measures are numeric values. (CORRECT)
- Dimensions are qualitative data values. (CORRECT)
Correct!
14. Fill in the blank: The term _____ is a mathematical concept indicating that a measure or dimension has an infinite and uncountable number of outcomes.
- factorial
- discrete
- continuous (CORRECT)
- operative
Correct!
15. In Tableau, what are the custom segments of data that create the groups of values used in a histogram?
- Bins (CORRECT)
- Worksheets
- Fields
- Filters
Correct!
16. A data analytics team at a beverage company creates a presentation for stakeholders about juice sales. They first focus on sales in 15 cities. Then, they share broader insights about sales throughout the state. What type of approach to data visualization does this scenario describe?
- Specific-to-generic (CORRECT)
- Descriptive
- Generic-to-specific
- Chronological
Correct!
17. Fill in the blank: A set in Tableau is a custom _____ created from a larger dataset based on custom conditions.
- heat map
- workbook
- field of data (CORRECT)
- plot
Correct!
18. Fill in the blank: A continuous dimension has an infinite number of outcomes, whereas the _____ dimension has a finite number of outcomes.
- Measureless
- connected
- discrete (CORRECT)
- perpetual
Correct!
19. Fill in the blank: A worksheet in Tableau Public is a data page that contains a _____ in a single view.
- Dashboard
- data visualization (CORRECT)
- bin
- dataset
Correct!
20. Which of the following statements correctly describe dimensions and measures in Tableau? Select all that apply.
- Dimensions can be aggregated or placed in calculations.
- Measures are qualitative data values.
- Measures can be aggregated or placed in calculations. (CORRECT)
- Measures are numeric values. (CORRECT)
Correct!
21. A data professional at a restaurant distributor creates a presentation for stakeholders about delivery efficiency. They first share broad insights about delivery speeds nationwide. Then, they focus on particular states and counties. What type of approach to data visualization does this scenario describe?
- Chronological
- Generic-to-specific (CORRECT)
- Broad
- Specific-to-generic
Correct!
22. A data analytics team at a music venue creates a presentation for stakeholders about merchandise sales. They first focus on average t-shirt purchases at five particular venues. Then, they share broader insights about purchases across all their venues. What type of approach to data visualization does this scenario describe?
- Fluid
- Generic-to-specific
- Specific-to-generic (CORRECT)
- Chronological
Correct!
23. A data analytics team working for a party planner creates a presentation for stakeholders about food and beverage needs. They share data about parties six months ago through to the present day. What type of approach to data visualization does this scenario describe?
- Generic-to-specific
- Specific-to-generic
- Fluid
- Chronological (CORRECT)
Correct!
24. A data professional working for an automotive company creates a presentation for stakeholders about vehicle repair efficiency. They first share broad insights about repair performance nationwide. Then, they focus on particular states and counties. What type of approach to data visualization does this scenario describe?
- Specific-to-generic
- Broad
- Chronological
- Generic-to-specific (CORRECT)
Correct!