Question 1

The Guidelines for Developing Visualizations recommend always starting the scale for a vertical axis at zero.

Accepted Answer

The Guidelines for Developing Visualizations recommend always starting the scale for a vertical axis at zero to avoid distorting the visual representation of the data.

Question 2

A multidimensional contingency table allows you to tally the responses of more than two categorical variables.

Accepted Answer

A multidimensional contingency table can contain multiple rows and columns representing different categorical variables, allowing for the tallying of responses across multiple dimensions.

Question 3

Given below is the scatter plot of the number of employees and the total revenue ($millions)of 20 U.S.companies.Companies that have higher numbers of employees appear to also have higher total revenue.

Accepted Answer

As per the given scatter plot, there seems to be a positive correlation between the number of employees and total revenue, indicating that companies with higher numbers of employees also tend to have higher revenue. As per the scatter plot, it can be observed that companies with higher numbers of employees tend to have higher total revenue. Therefore, the statement is true.

Question 4

A multidimensional contingency table allows you to tally the responses of more than two continuous variables.

Accepted Answer

A multidimensional contingency table is used for categorizing data across more than two categorical variables, not continuous variables.

Question 5

Given below is the scatter plot of the number of employees and the total revenue ($millions)of 20 U.S.companies.There appears to be a positive relationship between total revenue and the number of employees.

Accepted Answer

The scatter plot shows a generally upward trend (positive relationship) between the number of employees and total revenue of the 20 U.S. companies. Therefore, the statement is true. From the scatter plot, it can be observed that as the number of employees increase, there is a corresponding increase in total revenue. This indicates a positive relationship between the two variables.

Question 6

The Guidelines for Developing Visualizations recommend always including a scale for each axis if the chart contains axes.

Accepted Answer

This is to ensure that accurate comparisons can be made between different data points on the chart.

Question 7

The addition of visual elements that either fail to convey any useful information or that obscure important points about the data to enhance the visualization of data is called _______.

Accepted Answer

The answer of The addition of visual elements that either...

Question 8

The Guidelines for Developing Visualizations recommend avoiding uncommon chart type such as doughnut, radar, cone and pyramid charts.

Accepted Answer

The Guidelines for Developing Visualizations recommend avoiding uncommon chart types such as doughnut, radar, cone, and pyramid charts. It is recommended to use common chart types like bar charts, line charts, and scatter plots.

Question 9

The Guidelines for Developing Visualizations recommend using varying scale to conserve precious space whenever possible.

Accepted Answer

The Guidelines for Developing Visualizations typically recommend maintaining a consistent scale to ensure clarity and accuracy in data interpretation, rather than varying scale which can mislead or confuse the viewer.

Question 10

Microsoft Excel creates distribution tables using user-defined classes.

Accepted Answer

Microsoft Excel does not create distribution tables using user-defined classes.

Question 11

The Guidelines for Developing Visualizations recommend labeling all axes only when it is possible.

Accepted Answer

The Guidelines for Developing Visualizations recommend labeling all axes clearly to ensure that the data is understandable, regardless of the possibility. It is a fundamental practice for clarity and comprehension in data visualization.

Question 12

When you work with many variables, you must be mindful of the limits of the information technology as well as the limits of the ability of your readers to perceive and comprehend your results.

Accepted Answer

It is important to consider the limitations of technology and the human capacity to understand complex information when working with multiple variables. This can help ensure that your results are accurate, relevant, and accessible to your intended audience.

Question 13

The Guidelines for Developing Visualizations recommend using the simplest possible visualization.

Accepted Answer

The Guidelines for Developing Visualizations recommend using the simplest possible visualization to communicate the intended message effectively and efficiently. Complex visualizations may confuse the viewer and hinder understanding.

Quiz 2: Organizing and Visualizing Variables