BIS 582- Quiz Questions

In order to understand the customer order frequency for each category, we can create a visulization using the following steps: 1. Create a calculated field "# of Order per Customer", and the expression is ____________; 2. Convert "# of Order per Customer" to __________; 3. Add "# of Order per Customer" to _____________; 4. Add _______ to __________; 5. Add Category to filter and show filter.

1. { FIXED [Customer Name]:COUNTD([Order ID])} 2. Dimension 3. Columns 4. COUNTD([Customer Name]); Rows

While human perception is powerful and able to wrestle with large and complex data sets, it is constrained by certain limits. For example, there is a limit to the number of dimensions that you can encode in data and see in a single instant of time. In order to solve the multi-dimensional problem, what are some of the methods that can be used in data visualization?

Aggregation Interactive filtering Brushing

Observe the graphs below and select the correct statement.

All of these graphs are using the same data, and the reason they look different is because of the different data starting-ending points on axes.

In 1854 Cholera Outbreak - Snow's Map.twbx file. (Download from Blackboard>>Weekly Materials>>Week 1>>Hands-on Practice Sample Files) Look at the graphic in the "Cholera Cases and Pumps" tab, and can you tell which street has the highest concentration of death cases?

Broa(d) Street

Our minds tend to see complete figures or forms even if a picture is incomplete. This is one of the examples of the law of ___________.

Closure

Suppose you want to show your audience how life expectancy has changed over the past 30 years using a line graph. Which Gestalt principles you should leverage?

Connection

There are 3 types of memories that process information in our brain- Iconic memory or Sensory memory Working memory Long term memory Which memory(ies) interact with visualizations?

Iconic memory and working memory

Charlie is on a marketing team. He worked very hard for six months, launching an extensive marketing campaign. He wants to impress the executive team with his accomplishments and select the data that can support his argument. He left out the data in regions that were showing no or even negative results. He wants the data to fit into his story. Charlie's behavior is an example of ______.

data cameo

Caleb is an intern for the data intelligence team. He learned many techniques from data visualization class at school. Caleb finds the bar charts are quite boring in the current company business reports. So he used the advanced techniques he learned and created a brand new report with all the fancy data visualization graphics, like treemap, packed bubble chart, box-and-whisker plots, and symbol maps. He does not fully understand the business logic behind the data, but he thinks the executive team would greatly appreciate the modern-looking of the new report. Caleb's behavior is an example of ___________.

data decoration

Dopesick is an American drama miniseries created by Danny Strong for Hulu. Dopesick focuses on "the epicenter of America's struggle with opioid addiction" across the U.S., on how individuals and families are affected by it, on the alleged conflicts of interest between various government agencies like the FDA and DOJ, and Purdue Pharma, and finally, on the legal case against Purdue Pharma and their development, testing and marketing of the drug OxyContin. - Wikipedia In this TV show, Purdue Pharma used the data graph below to convince doctors and FDA that their drug "provides smooth and sustained blood level" and has "fewer peaks and valleys than with immediate-release oxycodone". Thus, their product has a much lower risk to cause addiction.

es, because the Y-axis is manipulated. The distance between Y-axis numbers becomes smaller at the top. As a result, the graph is disproportionate at the top. The actual curve would look much deeper if the number distance on Y-axis is fixed.

The Picture Superiority Effect refers to the fact that a person is able to recall text content better than the content presented only as visual.

false

We visualize data to grab people's attention with eye-catching but inevitably less informative displays

false

he method you will use to communicate to your audience has implications on a number of factors, including the amount of control you will have over how the audience takes in the information and the level of detail that needs to be explicit. In a Live presentation, the amount of control you have is _______ and the level of detail needed is ________. Whereas with a written document or email, the amount of control you have is _____ and the level of detail needed is ________.

high, low; low, high

An example of a ______ data type would be naming conventions such as in the way we name different types of birds.

nominal

Your manager asks you to create a chart using the monthly sales data for a quick review of the sales performance of a product. Which of the following charts would be suitable to use in this case? Select all the chart(s) that you think would be appropriate.

the bar and line graph are the correct options

In 2003, Chris Stolte and Pat Hanrahan developed a specification language called VizQL, which described data graphics and how to connect them to databases. VizQL also supported an intuitive drag-and-drop system which ultimately evolved into the Tableau interface. In essence, VizQL allowed users to take queries and translate them into views.

true

Jeremy is the data analyst intern of a company. He has a strong statistical background and is very good at exploring and finding insights into the data sets. He then directly shares those insights with his business director without changing anything. Unfortunately, most of the time, his audience is unfamiliar with the data and cannot grasp his points. So, what type of mistakes (data forgery) did Jeremy make?

Data cut

There are three types of LOD expression keywords—_______, _______ and _______—each of which alters the scope of the LOD expression.

EXCLUDE, INCLUDE, FIXED

According to Stephen Few, what are three fundamental tasks for data visualization?

Exploration, sensemaking, and communication

Dimension filters will not impact INCLUDE/EXCLUDE calculated field.

False

Once you connect your data file to Tableau, on the data preview page, you can see different icons on the first row of the data table. These icons represent different types of data. For example, in the screenshot below, the globe icon in the first two columns represents geographic data. "Abc" means the data type in this column is a string. "#" means number. Users cannot change the data type manually.

False

Simple text cannot count as data visualization. Only graphs like a bar chart, pie charts, or some other form of charts can count as data visuliazation.

False

You can use one and only one dimension in the LOD expression.

False

If you want to calculate at a lower level of detail, then you will need to use _______ LOD expression.

Include

Which of the following are appropriate uses of contrasts. Select all that apply

One bright color contrasted with grey Bolding a specific cell in the table Using a bright color for the most important element and lighter shades for others. Using different colors for each category

Color is least effective for__________ data because it would be very difficult to provide enough colors to accurately represent the entire data set. Color works best for _______ data in that each data point can be assigned a distinct, unique color

Quantitative; Nominal

In the following example, _____ is _______ data, and it contains ______ details, _______ is _____ data, and it contains ________details.

Region, high-level, less; State/Province, low-level, more

There are many ways to improve the effectiveness of data visualization graphs. Suppose you can only do three things to improve the graph below. What would you do?

Remove the 3D effect, use only one color to show the data, and sort the data from high to low

In this example, how to use LOD expression to calculate the percentage of total regional sales for each State/Province?

SUM([Sales]) / SUM({FIXED [Region]:SUM([Sales])})

We visualize data because the human brain can perceive particular quantitative features and perform particular quantitative tasks most effectively when the data is expressed graphically.

Seeing the big picture Easily and rapidly comparing values Seeing patterns among values Comparing patterns

FIXED level of detail expressions can have a finer level of detail than the view, a coarser level of detail, or the same level of detail. The need to aggregate the results of a FIXED level of detail depends on what dimensions are in the view.

True

When a FIXED level of detail expression is saved as a measure you have the option of moving it to dimensions. INCLUDE and EXCLUDE level of detail expressions are always measures.

True

The process of converting visual cues to attributes is called

Visual Encoding

Select all the questions below that may help you understand your audience better.

What are the goals and priorities of your audience? Are they familiar with the data and topic? What are the preference and beliefs of your audience? What is the seniority level of your audience?

Often, the communication or deliverable you are creating is at the request of someone else: a client, a stakeholder, or your boss. This means you may not have all of the contexts and might need to consult with the requester to fully understand the situation. There is sometimes additional context in the head of this requester that they may assume is known or not think to say out loud.

What biases does our audience have that might make them supportive of or resistant to our message? Who is the audience or decision-maker? What do we know about them? If you only had a limited amount of time or a single sentence to tell your audience what they need to know, what would you say? What would a successful outcome look like?

magine you are a fourth grade science teacher. You just wrapped up an experimental pilot summer learning program on science that was aimed at giving kids exposure to the unpopular subject. You surveyed the children at the onset and end of the program to understand whether and how perceptions toward science changed. You believe the data shows a great success story. You would like to continue to offer the summer learning program on science going forward.

Who: The budget committee can approve funding for the continuation of the summer learning program. What: The summer learning program on science was a success; please approve the budget of $X to continue. How: Illustrate success with data collected through the survey conducted before and after the pilot program.

n 1854 Cholera Outbreak - Snow's Map.twbx file. (Download from Blackboard>>Weekly Materials>>Week 1>>Hands-on Practice Sample Files) We can see that there are multiple tabs at the bottom of the file. "Death Addresses", "Cholera Cases and Pumps", "Broad Street Detail" are _________. Here, you can build views of your data by dragging and dropping fields onto shelves. "Background", "Addresses", "Map of Outbreak", "Broad Street", and "Conclusion" are _________. They are a combination of several views that you can arrange for a presentation or monitor. "Cholera Analysis" is a ___________. It is a sequence of views or dashboards that work together to convey information.

Worksheets; Dashboards; Story

When it comes to explanatory analysis, what are the things to consider before visualizing any data?

Your audience and the relationship that you have with your audience. What do you need your audience to know or do? How will you communicate to your audience? What tone do you want your communication to set? What data is available that will help make my point?

Which one of the following is a valid LOD expression?

[FIXED [Region]: MIN([Profit])]

In an exploratory analysis, I ________ the audience. I _______ the data. ___________ critical. I __________ .

am; know; Flexibility and speed are; don't know what the story is