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The DECT frequencies and DECT frequency bands are normally allocated to DECT technology. The most common DECT frequencies are from 1880 - 1900 MHz. This DECT frequency allocation is the most widespread and used in Europe. This DECT spectrum is unlicensed and technology exclusive, and this ensure ensures almost interference free operation.
Report Abuse. The relative frequency of a particular category is the proportion of observations that fall into the particular category. The cumulative frequency (or proportions) is addition of the frequencies in each category from zero to a particular category. If your chart is a histogram, the proportions (areas) of all the bars should add up to 1. There is no practical equation, it's just a matter of counting.