psyteachr_fqa Ch. 09

scale_y_continuous()

{ggplot2}

scale y axis to be continuous

t.test()

{stats}

computer one and two sample Student’s t-test on vectors of data

geom_violin()

{ggplot2}

create violin plot

geom_boxplot()

{ggplot2}

add layer of boxplots to plot

ggplot()

{ggplot2}

create a plotting area

mutate()

{dplyr}

create or modify data columns

group_by()

{dplyr}

group data by levels of column

format()

{base}

format object for pretty printing

round()

{base}

round values to specified number of digits

summary()

{base}

return summary of model fitting functions

aes()

{ggplot2}

create aesthetic mappings between data and plot

sd()

{stats}

compute standard deviation

mean()

{base}

calculate mean of elements of vector

stat_summary()

{ggplot2}

summarize y values for each x value

lm()

{stats}

fit linear model

guides()

{ggplot2}

set guides for scale

The end!