Description Usage Arguments Details Value Author(s) References See Also Examples
Calculate spherical scores and average spherical scores by a grouping variable.
1 
object 
an object of class "formula", of the form

data 
an optional data frame or list containing the
variables in the formula. If not found in 
group 
the name of a grouping variable within 
bounds 
a vector of length 2 corresponding to the desired minimum and maximum spherical score, respectively. 
reverse 
if 
If group
is supplied, the function returns
a list (see value section). Otherwise, the function returns a numeric
vector containing the spherical score associated with each forecast.
Depending on input arguments, sphscore
may return an object of
class numeric
containing raw spherical scores. It may also return
a list containing the objects below.
rawscores 
an object of class 
mnsph 
an object of class 
Ed Merkle
Toda, M. (1963). Measurement of subjective probability distributions. ESDTDR63407, Decision Sciences Laboratory, L. G. Hanscom Field, Bedford, Mass.
Shuford, E. H., Albert, A., & Massengill, H. E. (1966). Admissible probability measurement procedures. Psychometrika, 31, 125145.
1 2 3 4 5 6  data("WorldEvents")
## Raw spherical scores
sph1 < sphscore(answer ~ forecast, data=WorldEvents)
## Raw spherical scores plus group means
sph2 < sphscore(answer ~ forecast, data=WorldEvents,
group="forecaster")

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