Patent ID: 8798949

Claim:
A measuring apparatus comprising: means for creating M data sets S 1 (d 1 to dN) to SM (d 1 to dN) by repeating a measurement while varying at least one measurement parameter in M increments, each of the data sets having N data points; means for creating sets S 1 (dn) to SM (dn) of the data points contained in the M data sets S 1 (d 1 to dN) to SM (d 1 to dN) such that the data points of each one of the sets S 1 (dn) to SM (dn) have the same ordinal number dn; correlation computing means for finding a correlation data set C(c 1 to cN) indicating correlation strengths about the data points of the ordinal numbers by finding correlations between data representing variations forecasted in response to variations in the parameter regarding the sets S 1 (dn) to SM(dn); and computing means for finding a product of an accumulated or anticipated data set Sav(d 1 to dN) which has N data points and which is obtained by an accumulation operation after correcting effects of variations in the parameter regarding the data sets S 1 (d 1 to dN) to SM(d 1 to dN) and the correlation data set C(c 1 to cN) or a product of a separately measured data set So(d 1 to dN) and the correlation data set C(c 1 to cN).