agree_stat              Calculate Agreement statistic
b_index                 Calculate B-index
bh_depend               Brown and Hudson's (2002, p. 153) Table 5.1a
                        Data for 45 examinees on 30 test items
bh_gstudy               Brown and Hudson's (2002, p. 177) Table 5.8
                        Data for 30 examinees on 30 test items with an
                        ID column and a total score column.
bh_item                 Brown and Hudson's (2002, p. 124) Table 4.8
                        Item analysis data (first 10 items only)
crt_iteman              Calculate criterion-referenced item
                        discrimination indices
if_fail                 Calculate item facility for failing students
if_pass                 Calculate item facility for passing students
if_total                Calculate item facility
item_phi                Calculate Item Phi
phi_domain              Calculate Brown's (1990) short-cut estimate for
                        phi dependability
phi_lambda              Calculate Brennan's (1984) estimate for phi
                        lambda
sd_pop                  Calculate standard deviation for the population
sub_agree_coef          Subkoviak's (1988) table of approximate values
                        of the agreement coefficient
sub_kappa_coef          Subkoviak's (1988) table of approximate values
                        of the kappa coefficient
subkoviak               Calculate Subkoviak's (1988) single
                        administration consistency indices
