Wright's Cumulative Average Unit Learning Curve Function

Computes the time (or cost) required for a specific unit using Wright's cumulative average model.

ca_unit(t, n, r, m = 1, na.rm = FALSE)

Arguments

t

time (or cost) required for the mth unit of production

n

nth unit you wish to predict the time (or cost) for

r

learning curve rate

m

mth unit for which you have time (or cost) information (default is m = 1)

na.rm

Should NA values be removed?

Examples

# An estimator want to know the unit hours for unit 2,200 using
# when the hours for unit 1 were 110 and the learning rate was
# 88.5%.

ca_unit(t = 110, m = 1, n = 2200, r = .885)
#> [1] 23.34001
## [1] 23.34001