[enum] anychart.enums.AggregationTypeImprove this Doc

Aggregation type for table columns.

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Value	Description	Example
average	Calculate average value in a group and use it as a value of a point.
first	Choose the first non-NaN value in a group as a value of a point.
first-value	Choose the first non-undefined value as a value of a point.
last	Choose the last non-NaN value in a group as a value of a point.
last-value	Choose the last non-undefined value as a value of a point.
list	Put all non-undefined values in a group to an array and us it as a value of a point.
max	Choose the biggest non-NaN value in a group as a value of a point.
min	Choose the lowest non-NaN value in a group as a value of a point.
sum	Calculate the sum of values in a group and use it as a value of a point.
weighted-average	Calculate average value in a group using other column values as weights and use it as a value of a point.