tcc_plot: Produce Test Characteristic Curve Plots
In UO-BRT/exirt: Analyze data from the Oregon Extended Assessment

tcc_plot

R Documentation

Produce Test Characteristic Curve Plots

Description

Produce Test Characteristic Curve Plots

Usage

tcc_plot(
  item_diff_table,
  theta = seq(-6, 6, 0.01),
  content = c("ELA|Math", "ELA", "Math", "Science", "ELA|Science", "Math|Science", "all"),
  grades = "[3-8]"
)

Arguments

`item_diff_table`	The data frame returned from `get_item_diffs()`.
`theta`	The person ability estimate. This is the `theta` estimate from `get_person_estimates()` (not the RIT score). Defaults to a sequence from -6 to 6 in increments of 0.01.
`content`	Subset the plot to a specific content area. Defaults to "ELA\|Math", which will select both ELA and Math.
`grades`	The grade levels to include in the plot. Defaults to `[3-8]`, in which case grades 3 through 8 will be selected. Any grade range can be supplied, with the range passed in brackets. A single grade can also be supplied, which does not require brackets, (e.g., `5` would select only grade 5)