By adding up the (one by one,) the frequency total in order to find the cumulative frequency, most commonly, you just then plot this on a cumulative frequency graph or box plot.
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A cumulative frequency polygon has straight lines connecting the points. A normal cumulative frequency diagram uses a smooth curve to join the points.
I've occasionally seen "cumulative frequency" shortened to the word "cume".
Frequency and cumulative frequency are two types of frequency distributions. These are frequency tables that show statistical data for different types of frequencies that include absolute, relative, and cumulative frequencies. There are mathematical formulas used to calculate these frequencies.
the frequency is less than OR EQUAL TO the cumulative frequency
The cumulative frequency of a random variable X for the value x is the number of observations such that X ? x.