PsyTeachR ADS Ch. 3

default value

A value that a function uses for an argument if it is skipped.

double

A data type representing a real decimal number

median

The middle number in a distribution where half of the values are larger and half are smaller.

chunk

A section of code in an R Markdown file

categorical

Data that can only take certain values, such as types of pet.

ordinal

Discrete variables that have an inherent order, such as number of legs

tidy data

A format for data that maps the meaning onto the structure.

observation

All of the data about a single trial or question.

string

A piece of text inside of quotes.

knit

To create an HTML, PDF, or Word document from an R Markdown (Rmd) document

outlier

A data point that is extremely distant from most of the other data points

integer

A data type representing whole numbers.

value

A single number or piece of data.

logical

A data type representing TRUE or FALSE values.

factor

A data type where a specific set of values are stored with labels; An explanatory variable manipulated by the experimenter

character

A data type representing strings of text.

numeric

A data type representing a real decimal number or integer.

vector

A type of data structure that collects values with the same data type, like T/F values, numbers, or strings.

argument

A variable that provides input to a function.

variable

A word that identifies and stores the value of some data for later use.

R markdown

The R-specific version of markdown: a way to specify formatting, such as headers, paragraphs, lists, bolding, and links, as well as code blocks and inline code.

geom

The geometric style in which data are displayed, such as boxplot, density, or histogram.

nominal

Categorical variables that don’t have an inherent order, such as types of animal.

likert

A rating scale with a small number of discrete points in order

continuous

Data that can take on any values between other existing values.

data type

The kind of data represented by an object.

The end!