Data Driven Societies Quiz 1 (9/8)

Data

Raw facts, numbers, unprocessed and unorganized, context free

Information

Processed and organized, has context and meaning, answers questions

class(data)

Tells us what kind of data R has presumed is stored in variable data. ex: receiving data.frame means the data is an excel sheet

getwd()

Get working directory. Tells you where R is looking on your computer to find files.

view(data)

Presents all data

Head(data)

Presents top section of data

dim(data)

States #rows and #columns

Measures of central tendency

Mean, median, and mode. Lose context of the entire data set by stripping anomalies and surrounding details.

Measures of dispersion

Range, SD, IQR. Show how scattered the data points are around a central value.

IQR

75th percentile - 25th percentile. Measures the statistical spread of the middle 50% of a data set.

Evasive bullshit

Meant to dodge questions or accountability.

Persuasive bullshit

Meant to show off knowledge or authority.

Black boxes

Complex systems (like algorithms or statistical models) that are hard to understand or question.

Lie

A deliberate falsehood.

Bullshit

Speech intended to persuade or impress without regard for truth.