A frequency polygon is drawn for the following data. So the x-coordinate of the point having y coordinate as 21 is

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Solution

The correct option is C
25

21 is corresponding to class 20 - 30.

For frequency polygon, x coordinate is (20 + 30)/2 = 25 and y coordinate is 21.

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Similar questions

Following table gives marks and number of students of a class.

Which point on the frequency polygon will have its y coordinate as 19?

Draw a histogram to represent the following frequency distribution.

If the median of the distribution is given below is 28.5, find the values of x and y.

Class interval	1−10	11−20	21−30	31−40	41−50	51−60
Frequency	8	3	6	12	2	7

Class Interval	60−69	50−59	40−49	30−39	20−29	10−19
Frequency	13	15	21	20	19	12

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