first you draw another column and then from the grouped data you write the midpoints then you plot the frequency, and make sure also you are plotting the mid points for example: frequency 0<10 6 you would plot 5 in the x axis and 6 in the y axis
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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.
It is called an ogive.
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.
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.