Data Science
According to Dhar (2013), it is possible to store the world's entire stock of music on a device that costs... * $50 $500 $5,000 $50,000
$500
Why do fake news spread faster than true news in social media? (Ball 2013) * Fake news are more fun Fake news seem more trustworthy Fake new arouse negative emotions such as fear and disgust combined with novelty Social media platforms promote fake news
Fake new arouse negative emotions such as fear and disgust combined with novelty
What are the Tabulo Basic Operations
Functions, Filtering, Sorting
How to create a calculated field on tableau
In a worksheet in Tableau, select Analysis > Create Calculated Field. In the Calculation Editor that opens, give the calculated field a name.
According to Unwin (2008), a scale is 'really nice' if it... * Has the maximum and minimum values at the endpoints Uses more than 100 tick marks Includes 0 Has even numbers at the endpoints
Includes 0
According to Hayes (2013), a benefit of large sample is that... * It minimizes sampling error It eliminates the need for hypotheses It is free of bias It minimizes measurement error
It minimizes sampling error
Function
Mapping from a set of values to another set of values ex; f(x)=x+1 Area
What was the difference that made Nightingale successful and Mendel not successful during their lifetime? Davenport (2013) * Their gender Nightingale had better education Nightingale was working on a more important topic Mendel was not able to communicate his results well
Mendel was not able to communicate his results well
According to Rock (2018), a useful hypothesis must be... * Possible to prove wrong Possible to prove right Consistent with several explanations None of the above
Possible to prove wrong
According to Unwin (2008), the reason for using graphic displays is to... * Simplify or clarify relationships in the data Convince or to inform the viewer Delight and entertain the viewer Present or explore data
Present or explore data
Metadata can be described as:
Variable name (a dataset column label) Variable description (in a data dictionary) Data type (in a data dictionary) Value (the datum itself)
The 3 V's of Big Data are:
Volume, Variety, Velocity
Metadata is
data that describe other data
Data vs. Information
Data: Raw unorganized facts recorded observations about the world Information: Useful insight derived by data
According to Unwin (2008), an issue with map-based graphical visualizations is that... * People have poor geography skills Shape has no meaning Maps are difficult to draw Distance is not directly related to similarity
Distance is not directly related to similarity
Filtering
Drop observations based on a certain criteria ex; analyze data for just PA not US
How many people produce 65% of anti-vaccine information online? (Fenkel 2021) * 2 12 97 600
12
According to Hayes (2013), what percentage of business leaders do not trust the information they use to make decisions? * 66% 25% 33% 99%
33%
Which one of the following is NOT included in the type of infographics Ritchie describes? * Data visualization infographics Information design infographics Advertorial infographics Editorial infographics
Advertorial infographics
Accoding to Open Data Handbook, open data can boost... * Transparency and democratic control Innovation Improved effectiveness of government services Self-empowerment All of the above
All of the above
What is data science? A. A new name for statistics B. The study of the generalizable extraction of knowledge from data C. Any science that uses data D. A practice that only engineers and computer scientists can do
B. The study of the generalizable extraction of knowledge from data
According to Ziemann et al. (2018), since the problem with Microsoft Excel converting gene names into dates and floating point numbers was first described in 2004, it has... * Disappeared Diminished Become more frequent Stayed the same
Become more frequent
In their article, Kaplan et al. (2021) criticize... * COVID-19 vaccines Those who are against vaccinations Drive to vaccinate everyone Reasoning about vaccine safety
Reasoning about vaccine safety
According to Davenport (2013), what is an example of something that should NOT be included while storytelling with data... * Sequence of activities used in the analysis Return on investment Money earned Actions to take and the consequences of those actions
Sequence of activities used in the analysis
According to Davenport (2013), the "essence" of analytical communication includes all EXCEPT... * The model The data The relationships among the variables The computer software
The computer software
A Hypothesis Must Be
testable falsifiable and grounded in rational
