Session 2_hard
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Session 2_hard

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Questions and Answers

What does a bar chart primarily compare?

  • Trends over time
  • Categories of data (correct)
  • Quantitative relationships
  • Time intervals

    • A line graph is best used for comparing categorical data.

    False

    What do the whiskers in a box plot represent?

    The range of the remaining data and possible outliers.

    A __________ plot demonstrates the relationship between two numeric variables and shows correlation.

    <p>scatter</p> Signup and view all the answers

    Match the following types of data visualization with their primary purpose:

    <p>Bar chart = Comparing categorical data Line graph = Showing trends over time Box plot = Displaying data distribution Scatter plot = Illustrating relationships between variables</p> Signup and view all the answers

    What is the main characteristic of a line graph?

    <p>Demonstrates change over continuous measurement</p> Signup and view all the answers

    In scatter plots, the horizontal axis always contains the dependent variable.

    <p>False</p> Signup and view all the answers

    Why should you avoid overplotting in a scatter plot?

    <p>It makes it difficult to see relationships between points and variables.</p> Signup and view all the answers

    A clustered bar chart extends a bar chart to include __________ categories of data.

    <p>more</p> Signup and view all the answers

    Which visualization is ideal for demonstrating trends and patterns over time?

    <p>Line graph</p> Signup and view all the answers

    What is the primary purpose of declarative visualizations?

    <p>To communicate information and make a statement</p> Signup and view all the answers

    Explorative visualizations are primarily aimed at stating facts.

    <p>False</p> Signup and view all the answers

    What type of visualization would you use to understand why a sales team's performance has decreased?

    <p>Explorative visualization</p> Signup and view all the answers

    The Gartner Hype Cycle illustrated in Figure 1 represents a _________ idea.

    <p>conceptual</p> Signup and view all the answers

    Match the type of visualization with its purpose:

    <p>Declarative visualization = Communicates a statement Explorative visualization = Discovers insights from data Conceptual visualization = Illustrates ideas Data-driven visualization = Presents statistical information</p> Signup and view all the answers

    Which of the following best describes conceptual visualization?

    <p>It aims to illustrate abstract ideas.</p> Signup and view all the answers

    Declarative visualizations are used to explore data.

    <p>False</p> Signup and view all the answers

    What is an example of a declarative visualization?

    <p>Quarterly sales report</p> Signup and view all the answers

    Explorative visualizations help to ________ data to figure something out.

    <p>explore</p> Signup and view all the answers

    What type of chart effectively showcases data trends and variations over a period or across categories?

    <p>Area chart</p> Signup and view all the answers

    Heatmaps are only useful for categorical data.

    <p>False</p> Signup and view all the answers

    List two key purposes of using a histogram.

    <p>Display the frequency of data values, determine median and distribution.</p> Signup and view all the answers

    An effective way to reveal patterns and detect potential correlations is through a __________.

    <p>heatmap</p> Signup and view all the answers

    Match each chart type with its primary function:

    <p>Histogram = Group numbers into ranges Heatmap = Visualize data through variations in coloring Area chart = Show trends over time Stacked bar chart = Compare total values across categories</p> Signup and view all the answers

    What is a potential issue with using area charts?

    <p>They can be misleading if not designed carefully.</p> Signup and view all the answers

    Stacked bar charts always display data horizontally.

    <p>False</p> Signup and view all the answers

    What is one best practice for area charts?

    <p>Limit the number of data sets.</p> Signup and view all the answers

    Data storytelling supports effective business decision-making through __________, understanding, and intelligence.

    <p>insight</p> Signup and view all the answers

    What is the primary use of maps in data visualization?

    <p>To represent data related to geographical areas.</p> Signup and view all the answers

    What is the main purpose of infographics?

    <p>To summarize key points and make complex data accessible</p> Signup and view all the answers

    The end of a presentation should focus on how to implement the solution.

    <p>False</p> Signup and view all the answers

    Which key elements should be included when setting up a problem in a presentation?

    <p>When, Where, Who, the problem, the action, and the solution.</p> Signup and view all the answers

    In the middle of a presentation, relevant background information should be provided to develop the __________.

    <p>problem situation</p> Signup and view all the answers

    Match the following components of a presentation with their roles:

    <p>Beginning = To introduce the main character and the problem Middle = To develop the conflict and present examples End = To emphasize the call to action Horizontal logic = To provide an overarching story through titles</p> Signup and view all the answers

    Which component represents the beginning of the narrative arc in data storytelling?

    <p>Setup</p> Signup and view all the answers

    A good story should include disconnected events without any overarching purpose.

    <p>False</p> Signup and view all the answers

    What is the primary focus of the 'climax' in data storytelling?

    <p>The key turning point in the narrative.</p> Signup and view all the answers

    The narrative arc includes Setup, Conflict, and __________.

    <p>Resolution</p> Signup and view all the answers

    Match the examples with their respective components of data storytelling:

    <p>Powerful statistic = Setup Vaccine development = Climax Assessing impact = Resolution Maps and graphs = Visualization tools</p> Signup and view all the answers

    Which of the following is NOT a characteristic of a good story?

    <p>A lack of resolution</p> Signup and view all the answers

    Charts and graphs can be used to represent economic data in a data storytelling narrative.

    <p>True</p> Signup and view all the answers

    What might overstuffing a plot with too many elements cause in data storytelling?

    <p>It reduces the story's overall coherence.</p> Signup and view all the answers

    The __________ of the pandemic included overwhelmed healthcare systems and rising unemployment rates.

    <p>Rising action</p> Signup and view all the answers

    Which visual element is essential to depict the geographical spread of a virus?

    <p>Maps</p> Signup and view all the answers

    Study Notes

    Declarative vs Explorative Visualizations

    • Declarative visualizations communicate information, make a statement, and declare a fact.
    • Explorative visualizations explore a data set to gain insights, discover hidden relationships, and understand trends.

    Comparing Data

    • Bar charts are used to compare categories of data, with the height of the bars representing the numerical value.
    • Line graphs show changes in quantitative values over a continuous measurement, such as time.
    • Box and whisker plots illustrate the distribution of data values through quartiles, boxes, and whiskers.

    Showing Correlations

    • Scatter plots show the relationship between two variables, positioning data points on two axes.
    • Heatmaps visualize data by using colour intensity to represent values in a table format.

    Showing Distribution

    • Histograms group data into ranges, displaying the frequency of values within each range.
    • Maps represent data related to geographical areas, providing a visual representation of spatial distribution.

    Showing Composition

    • Area charts use both lines and filled areas to display trends and variations over time or categories.
    • Stacked bar charts compare total values across categories while also showing the relative composition of each category.

    Data Storytelling

    • Data storytelling effectively presents data to support business decision-making through insight, understanding, and intelligence.
    • A good story grabs attention, takes the audience on a journey, and evokes an emotional response.

    Three Minute Story

    • The Big Idea should articulate a unique point of view, convey what is at stake, and be a complete sentence
    • The Narrative Arc of a story consists of
      • Setup: Introduces the situation
      • Conflict: Describes the change in reality
      • Resolution: Outlines the outcome of the change

    Avoiding Bad Stories

    • Rambling plot: A series of unconnected events without a clear purpose or direction
    • Endless buildup: A story that continues to build without delivering a satisfying resolution
    • Confusing structure: A disjointed narrative without clear ideas linking to the main vision
    • Overstuffed plot: Too many elements, distracting from the main storyline
    • Lack of stakes: No real dangers, challenges, or consequences

    Story Example

    • The The COVID-19 Pandemic: A Global Impact Analysis story uses a powerful statistic to start, gives context, uses maps, graphs, timelines, and charts to build the narrative, and highlights the impact of the pandemic on health and the economy.

    Visualizing the Story

    • Maps and geographic data illustrate the geographical spread of the virus.
    • Timelines depict the progression of events and responses.
    • Charts and graphs portray economic data, infection rates, vaccination rates, etc.
    • Infographics summarize key points and make complex data accessible.

    Story Elements

    • The beginning (setup) introduces the main character, problem, action, and solution.
    • The middle (conflict) develops the problem with background information, comparison points, examples, data, and potential solutions.
    • The end (resolution) emphasizes the call to action and clarifies what the audience should do with the new understanding.

    Clear Storytelling

    • Horizontal logic: The titles of slides should convey the overarching story
    • Vertical logic: All information on each slide should reinforce each other
    • Fresh perspective: A friend or colleague can provide a fresh perspective on the storytelling.

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    Related Documents

    Data Visualization PDF

    Description

    This quiz covers the key concepts of declarative and explorative visualizations, including various methods for comparing data and showing correlations. You will learn about bar charts, line graphs, scatter plots, and more, exploring how these tools reveal insights and trends in data. Test your knowledge on the different types of visualizations and their applications.

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