CUMULATIVE FREQUENCY DIAGRAMS

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Thirty boys enter a school javelin competition. The distances thrown are recorded in a cumulative frequency graph shown below.

If the top 15% of the boys qualify for the finals, estimate the qualifying distance.

Thirty boys enter a school javelin competition. The distances thrown are recorded in a cumulative frequency graph shown below.

What is the median distance thrown?

Thirty boys enter a school javelin competition. The distances thrown are recorded in a cumulative frequency graph shown below.

How many students throw more than 60 m?

A class of 120 students are given a maths question to solve. The time taken by the students is given the diagram below:

What is the median time?

A class of 120 students are given a maths question to solve. The time taken by the students is given the diagram below:

Top 20% of the students in the class, are selected for a national quiz completion. How many students were selected?

A class of 120 students are given a maths question to solve. The time taken by the students is given the diagram below:

What is the inter-quartile range?

The numbers of minutes spend by 80 customers in a book shop is given the diagram below:

What is the median duration?

The numbers of minutes spend by 80 customers in a book shop is given the diagram below:

What is the inter-quartile range?

The numbers of minutes spend by 80 customers in a book shop is given the diagram below:

How many customers spend more than 50 minutes in the books shop?

The numbers of minutes spend by 80 customers in a book shop is given the diagram below:

How many customers spend less than 30 minutes in the books shop?

The following diagram shows the amount of money spent in dollars by various students on their books.

What is the median amount spent?

The following diagram shows the amount of money spent in dollars by various students on their books.

What is the inter-quartile range?

The following diagram shows the amount of money spent in dollars by various students on their books.

How many students spend more than $50?

The following diagram shows the amount of money spent in dollars by various students on their books.

How many students spend less than $20?

The following diagram shows the amount of money spent in dollars by various students on their books.

How many students spend money in the range of $30 to $40?