Frequency is the value in numbers that shows how often a particular item occurs in the given data set. There are two types of frequency table – Grouped Frequency Distribution and Ungrouped Frequency Distribution .
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Frequency describes the number of waves that pass a fixed place in a given amount of time . So if the time it takes for a wave to pass is is 1/2 second, the frequency is 2 per second. If it takes 1/100 of an hour, the frequency is 100 per hour.
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