Frequency Polygon
Frequency Polygon
Frequency Polygon:
It is another method of representing frequency distributions graphically. Also, it is used to represent classified or grouped data graphically. It is a line graph of grouped frequency distribution plotted between class marks and frequencies. It can be obtained in two ways
Steps of Drawing Drawing Frequency Polygon (By First Drawing Histogram) :
Illustration : Draw a histogram and a frequency polygon of the following data :
| Age in years | 0-6 | 6-12 | 12-18 | 18-24 | 24-30 | 30-36 | 36-42 |
|---|---|---|---|---|---|---|---|
| No. of persons | 6 | 11 | 25 | 35 | 18 | 12 | 6 |
Solution : First we draw histogram of the given data, then we will locate mid-point of top horizontal side of rectangles.
Now, join these mid points by dotted line segments. Complete the polygon by joining the mid points of first interval to the mid-point of its left adjacent assumed class interval of zero frequency and mid-point of last class interval to its adjacent right assumed class interval of zero frequency.
In a cumulative frequency polygon, frequencies are plotted against | |||
| Right Option : B | |||
| View Explanation | |||
What type of graph is a frequency polygon? | |||
| Right Option : A | |||
| View Explanation | |||
Frequency polygon can be drawn with the help of ________________ | |||
| Right Option : B | |||
| View Explanation | |||
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8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
