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True or False: the electrical signals that result when light hits the photoreceptor cells in the retina pass all the way to the back of the human brain where they are processed by the primary visual cortex.
The image above, in which the square A is the exact same shade of gray as the square B, is an example of an illusion.
Research into visual encodings has shown that we tend to make more accurate judgments about relative sizes of which of the following?
True or False: If a particular chart can’t help you perform a specific task you need to perform or answer a specific question you need to answer, that doesn’t mean that it can’t be useful for you or someone else to perform a different task or answer a different question.
Which of the following four data scale types are considered Quantitative as opposed to Categorical? (Select all that apply)
Which of the following four data scale types have levels that have an inherent order to them, with some values greater than others? (Select all that apply):
True or False: The different levels of an ORDINAL scale variable, like medal won in a tournament, have consistent intervals between them, so the difference between two adjacent levels (e.g. gold medal and silver medal) is identical to the difference between to other adjacent levels (e.g. silver medal and bronze medal).
Fill in the blank (note: you can either spell the value or type in the number):
The difference between INTERVAL scale variables and RATIO scale variables lies in the meaning of the number .
Match the variable below about a city’s annual marathon with its corresponding data scale type:
Look at the chart below, that uses circle marks for each country, and answer the following question:
What encoding channel is used to show differences in Life Expectancy between the countries?
Use the chart below to answer the following question:
What variable is used to encode the (purple) COLOR SATURATION channel?
Look at the two pie charts below that show educational attainment of U.S. adults (age 18 and over) in 2019 and choose the option below that indicates which chart best follows the Expressiveness Principle, and why.
True or False: There is only one way to define the “effectiveness” of a chart, namely, the ability for its encodings to enable the reader to make precise comparisons between the variables used in it. No other criteria matter.
Place the following magnitude channels in order of decreasing effectiveness, with the most effective at the top and the least effective at the bottom of the list. For this exercise, we’ll define “effectiveness” narrowly as the encoding’s ability to let us make high accuracy judgments about the data.
Which of the following charts uses the “pop out” effect to help a reader identify a target quickly and accurately?