psyteachr_fqa Ch. 08

mutate()

{dplyr}

create or modify data columns

scale_y_continuous()

{ggplot2}

scale y axis to be continuous

pivot_longer()

{tidyr}

pivot data frame to be longer

lm()

{stats}

fit linear model

round()

{base}

round values to specified number of digits

mean()

{base}

calculate mean of elements of vector

summary()

{base}

return summary of model fitting functions

head()

{utils}

return first rows of matrix, data frame, etc.

sd()

{stats}

compute standard deviation

geom_smooth()

{ggplot2}

create smoothed lines to plot

ggplot()

{ggplot2}

create a plotting area

geom_point()

{ggplot2}

add layer of points to plot

format()

{base}

format object for pretty printing

group_by()

{dplyr}

group data by levels of column

c()

{base}

create vector of numbers, characters, etc.

aes()

{ggplot2}

create aesthetic mappings between data and plot

The end!