getlet: Get Letter Grades

In ProfessR: Grades Setting and Exam Maker

Get Letter Grades

Description

Get letter grades from list of numeric scores

Usage

getlet(ggrades, divs)

Arguments

ggrades	vector of grades
divs	numerical vector of divisions

Details

Returns letter grades scaled linearly between divisions.

Value

LIST:

ggrades	Input grades
lett	letter values
scor	scores after scaling
divs	divisions used in setting scores
LETS	Letters for grades
SCRS	numeric divisions used for LETS
olett	letter values, older version
oscor	scores after scaling, older version binned

Author(s)

Jonathan M. Lees<[e-mail]>

See Also

do.grades

Examples

g = rnorm(130, m=82, sd=10)

g[g>100] = 100
g[g<1] = 1



B = boxplot(g)


divs = c(min(g), B$stats[1:4] + diff(B$stats)/2, max(g) )

G = getlet(g, divs)

cbind(G$LETS, G$SCRS)



data.frame(G$grades, G$lett, G$scor)

ProfessR documentation built on Aug. 21, 2023, 9:07 a.m.