# mean of high frequency data

i could not find definition if what is a mean of high and low frequencies data,itself definition i did not understand ,maybe it is situation when we have data ,from which each member has high frequencies?like each one has frequencies of occurring like $100$ or even $1000$? if it is,then simple it would be each member multiplied by it's frequencies ,added together and divided by sum of frequencies,but i am not sure and please tell me

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