Aggregation
Basic and Aggregated
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Series
The original series, i.e. the series to be aggregated, is called basic series. The series with the aggregates is called the aggregated series.
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Note that corrections are made for an unequal number of basic time units; for example when decade data are aggregated to monthly series.
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- for instantaneous observations:
Yj = (1/n)(10 X1,j + 10 X2,j + (n-20) X3,j )
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- for accumulative observations:
Yj = X1,j + X2,j + X3,j
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where:
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| i-th decade of month j
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number of days in month j |
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Series Codes
The series to aggregate can be selected or de-selected by clicking the checkbox of the series. By clicking your right mouse button on top of the Series list box you can select or de-select all series.
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