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Cumulative frequency distribution

A frequency distribution basically tells us how usually a specific worth of the variable is developing. However, if we want to know the complete amount of observations obtaining a benefit 'less than' or 'more than' a unique benefit of the variable, this frequency desk fails to furnish the facts as these kinds of. This data can be attained extremely conveniently from the 'cumulative frequency distribution', which is a modification of the presented FD and is received on successively adding the frequencies of the values of the variable in accordance to the selected regulation. The frequencies so obtained are named the cumulative frequencies abbreviated as c.f.

Frequency distribution histogram

It is made up in erecting a series of adjacent vertical rectangles on the sections of the horizontal axis, with bases equivalent to the width of the corresponding course intervals and heights are so taken that the areas of the rectangles are equivalent to the frequencies of the corresponding course.

Construction of frequency histogram: The variate values are taken along the X-axis and the frequencies together the Y-axis.

Circumstance (i) Histogram with equivalent lessons

Case (ii) Histogram with unequal courses

Indicate  [http://www.kiwibox.com/peakknee17/blog/entry/108984191/indicate-and-common-deviation-of-frequency-distribution/?pPage=0 Math Worksheets - A Amazing Useful resource for Young children] of frequency distribution

In case of frequency distribution X/f the arithmetic suggest

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