Calculation of Median by drawing two types of cumulative frequency polygon.

Graph of Cumulative Frequency

What is cumulative frequency?

Consider the following statements related to cumulative frequency polygon of a frequency distribution, the frequencies being cumulated from the lower end of the range : 1. The cumulative frequency polygon gives an equivalent representation of frequency distribution table. 2. The cumulative frequency polygon is a closed polygon with one horizontal and one vertical side. The other sides have non-negative slope. Which of the above statements is/are correct?

Cumulative Frequency Distribution

Construction of Cumulative frequency distribution

Show the following data by a frequency polygon.

Show the following data by a frequency polygon.

Calculation Of Arithmetic Mean In Case Of Cumulative Frequency Distribution