ProfessR (version 2.1)

getlet: 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

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

Details

Returns letter grades scaled linearly between divisions.

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)