tif: Test information function
In UO-BRT/exirt: Analyze data from the Oregon Extended Assessment
tif R Documentation
Test information function
Description
Sums the item information for each theta value supplied to provide
the overall information provided by the test for the given theta
values supplied. Internally, the theta values are converted to RIT
scores to make the output more directly interpretable.
Usage
tif(item_diff_table, theta = seq(-6, 6, 0.01))
Arguments
item_diff_table
The data frame returned from get_item_diffs()
with single_df = FALSE.
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.
UO-BRT/exirt documentation built on Jan. 29, 2023, 8:51 a.m.
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| tif | R Documentation |
Test information function
Description
Sums the item information for each theta value supplied to provide
the overall information provided by the test for the given theta
values supplied. Internally, the theta values are converted to RIT
scores to make the output more directly interpretable.
Usage
tif(item_diff_table, theta = seq(-6, 6, 0.01))
Arguments
item_diff_table |
The data frame returned from |
theta |
The person ability estimate. This is the |
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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