field references to (the name of) a MiningField for background statistics. The sequence of NUM-ARRAYs is the same as
for ContStats. For categorical fields there is only one array containing the frequencies; for numeric fields, the
second and third array contain the sums of values and the sums of squared values, respectively. The number of values
in each array must match the number of categories or intervals in UnivariateStats of the field.
field references to (the name of) a MiningField for background statistics. The sequence of NUM-ARRAYs is the same as for ContStats. For categorical fields there is only one array containing the frequencies; for numeric fields, the second and third array contain the sums of values and the sums of squared values, respectively. The number of values in each array must match the number of categories or intervals in UnivariateStats of the field.