In a study of diabetic patients in a village, the following observations were noted. Represent the given data by a frequency polygon using a histogram.

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Solution

We first calculate the class marks.

In the above table, we have taken imaginary class intervals 0-10 at beginning and 70-80 at the end, each with frequency zero. Now take class marks along x-axis and the corresponding frequencies along y-axis.

Plot points (5, 0), (15, 4), (25, 8, (35, 13), (45, 22), (55, 11), (65, 6) and (75, 0) and draw line segments.

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In a study of diabetic patients in a village, the following observations were noted.
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Represent the above data by a frequency polygon.

Q. In a study of diabetic patients in a village, the following observations were noted.

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Represent the above data by a frequency polygon.

Q. In a study of diabetic patients in a village, the following observations were noted.

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Represent the above data by a frequency polygon.

Q. The following data were acquired in a study of diabetic patients.

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No. of patients	7	11	19	9	1

Construct a frequency polygon for the data given.

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