Question

Construct a frequency polygon for the following frequency distribution, using a graph sheet.

Marks : 40 – 50 50 – 60 60 – 70 70 – 80 80 – 90 90 – 100
No. of students 7 18 26 37 20 6
Use 2 cm = 10 marks
2 cm = 5 students

Answer 1

Construction of frequency polygon for the given frequency distribution using a graph sheet:

• Take marks on x - axis with the given scale 2 cm = 10 marks.
• Similarly mark number of students on y - axis with scale 2 cm = 5 students.
• Plot points by marking midpoints of the marks against their corresponding frequencies.
• Join these points using a ruler.
• This is our required frequency polygon.

Answer 2

Explanation:

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