Graph of cumulative frequency distribution is useful ___________.

in calculation of the averages of the ungrouped frequencies

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in understaing the class marks calculation for grouped frequency distribution

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in understanding the accumulation of observations at particular level of exclusive series

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in understanding the accumulation of observations at particular level of inclusive series

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Solution

The correct option is C in understanding the accumulation of observations at particular level of exclusive series
A graph representing the cumulative frequencies of a grouped frequency distribution against the corresponding lower/upper boundaries of respective class intervals is called Cumulative Frequency Curve or Ogive curve.

These curves are useful in understanding the accumulation of observations at particular level of exclusive series or continous series.

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Similar questions

Q. In a grouped frequency distribution, the value of each observation of a particular class is assumed to be an average of upper and lower boundaries of that class. This value is called________.

Q. Weight (in Kg) of the students in a class is represented in a ungrouped frequency distribution table.

Weight (Kg)	Cumulative Frequency
30	21
35	17
40	12
45	5
50	2

What is the frequency of the data value of 45 ?

Q. In the following grouped frequency distribution table class marks are given.

Class Marks	$10$	$22$	$34$	$46$	$58$	$70$
Frequency	$6$	$14$	$20$	$21$	$9$	$5$

(i) Construct class intervals of the data. (Exclusive class intervals)
(ii) Construct less than cumulative frequencies and
(iii) Construct greater than cumulative frequencies

Q. Marks of 30 students are listed in the ungrouped distribution as given below.
13, 32, 45, 67, 23, 18, 23, 21, 10, 19,18, 17, 24, 12, 45, 56, 76, 80, 23, 12, 11, 12, 19, 15, 19, 54, 74, 34, 58, 34.

If this distribution is converted into a grouped frequency distribution, what is the length of the class interval if the number of the class interval is 5?

In a blood donation camp following was the observation of 15 people's blood group. A, B, AB, A, B, A, A, B, O, A, AB, B, A, B, AB. Make an ungrouped frequency distribution and find the rarest blood group. [2 Marks]

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