High Quality Content by WIKIPEDIA articles! The semivariance is half the variance of the increments z(xi + h) ? z(xi), but the whole variance of z-values at given separation distance h (Bachmaier and Backes, 2008). A plot of semivariances versus distances between ordered data in a graph is known as a semivariogram rather than a variogram. Many authors call 2hatgamma(h) a variogram, others use the terms variogram and semivariogram synonymously. However, Bachmaier and Backes (2008), who discussed this confusion, have shown that hatgamma(h) should be called a variogram, terms like semivariogram or semivariance should be avoided. This also shall become the guideline of the agricultural journal Precision Agriculture.

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