Jelaskan Variogram Empiris dari Variogram dalam bahasa sunda

For observations  at locations  the empirical variogram  is defined as (Cressie 1993):

where  denotes the set of pairs of observation  placed at an approximate distance of . Here "approximate distance " is not exactly defined and typically implemented by a certain tolerance.

The empirical variogram is used in géostatistik as a first estimate of the (théoretical) variogram needed for spatial interpolation by kriging.

According (Cressie 1993) for observations  from a stationary random field  the empirical variogram with lag tolerance 0 is an unbiased éstimator of the théoretical variogram, due to

See the controversy discussion on the correctness of the scaling factor below.